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228995325 = 32521379991
BaseRepresentation
bin11011010011000…
…11000011111101
3120221220011112100
431221203003331
5432110322300
634420055313
75450266566
oct1551430375
9527804470
10228995325
11108297639
1264834539
1338599bc0
14225ad16d
1515185700
hexda630fd

228995325 has 72 divisors (see below), whose sum is σ = 447749120. Its totient is φ = 111196800.

The previous prime is 228995323. The next prime is 228995329. The reversal of 228995325 is 523599822.

228995325 is a `hidden beast` number, since 2 + 28 + 99 + 532 + 5 = 666.

It is not a de Polignac number, because 228995325 - 21 = 228995323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228995323) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 230580 + ... + 231570.

Almost surely, 2228995325 is an apocalyptic number.

228995325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228995325 is a deficient number, since it is larger than the sum of its proper divisors (218753795).

228995325 is a wasteful number, since it uses less digits than its factorization.

228995325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1091 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 228995325 is about 15132.5914832853. The cubic root of 228995325 is about 611.7991539449.

It can be divided in two parts, 22899 and 5325, that added together give a square (28224 = 1682).

The spelling of 228995325 in words is "two hundred twenty-eight million, nine hundred ninety-five thousand, three hundred twenty-five".

Divisors: 1 3 5 9 13 15 25 39 45 65 75 79 117 195 225 237 325 395 585 711 975 991 1027 1185 1975 2925 2973 3081 3555 4955 5135 5925 8919 9243 12883 14865 15405 17775 24775 25675 38649 44595 46215 64415 74325 77025 78289 115947 193245 222975 231075 234867 322075 391445 579735 704601 966225 1017757 1174335 1957225 2898675 3053271 3523005 5088785 5871675 9159813 15266355 17615025 25443925 45799065 76331775 228995325