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228800052 = 22351319953
BaseRepresentation
bin11011010001100…
…11011000110100
3120221112020200000
431220303120310
5432033100202
634411551300
75445524355
oct1550633064
9527466600
10228800052
11108173958
126475b530
133852c060
142255bd2c
151514791c
hexda33634

228800052 has 144 divisors (see below), whose sum is σ = 680621760. Its totient is φ = 66624768.

The previous prime is 228800029. The next prime is 228800069. The reversal of 228800052 is 250008822.

228800052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 228799989 and 228800025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239608 + ... + 240560.

It is an arithmetic number, because the mean of its divisors is an integer number (4726540).

Almost surely, 2228800052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228800052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340310880).

228800052 is an abundant number, since it is smaller than the sum of its proper divisors (451821708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228800052 is a wasteful number, since it uses less digits than its factorization.

228800052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 228800052 is about 15126.1380398303. The cubic root of 228800052 is about 611.6252030422.

Adding to 228800052 its reverse (250008822), we get a palindrome (478808874).

The spelling of 228800052 in words is "two hundred twenty-eight million, eight hundred thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 13 18 19 26 27 36 38 39 52 54 57 76 78 81 108 114 117 156 162 171 228 234 243 247 324 342 351 468 486 494 513 684 702 741 953 972 988 1026 1053 1404 1482 1539 1906 2052 2106 2223 2859 2964 3078 3159 3812 4212 4446 4617 5718 6156 6318 6669 8577 8892 9234 11436 12389 12636 13338 17154 18107 18468 20007 24778 25731 26676 34308 36214 37167 40014 49556 51462 54321 60021 72428 74334 77193 80028 102924 108642 111501 120042 148668 154386 162963 217284 223002 231579 235391 240084 308772 325926 334503 446004 463158 470782 488889 651852 669006 706173 926316 941564 977778 1003509 1338012 1412346 1466667 1955556 2007018 2118519 2824692 2933334 3010527 4014036 4237038 4400001 5866668 6021054 6355557 8474076 8800002 12042108 12711114 17600004 19066671 25422228 38133342 57200013 76266684 114400026 228800052