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228165600 = 253521371103
BaseRepresentation
bin11011001100110…
…00011111100000
3120220100000100210
431212120133200
5431402244400
634350214120
75440242555
oct1546303740
9526300323
10228165600
11107880213
12644b4340
1338369340
1422434a2c
151506e950
hexd9987e0

228165600 has 288 divisors, whose sum is σ = 818947584. Its totient is φ = 54835200.

The previous prime is 228165593. The next prime is 228165601. The reversal of 228165600 is 6561822.

228165600 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228165601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2215149 + ... + 2215251.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2228165600 is an apocalyptic number.

228165600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228165600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409473792).

228165600 is an abundant number, since it is smaller than the sum of its proper divisors (590781984).

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

228165600 is a wasteful number, since it uses less digits than its factorization.

228165600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 228165600 is about 15105.1514391614. The cubic root of 228165600 is about 611.0593435181.

The spelling of 228165600 in words is "two hundred twenty-eight million, one hundred sixty-five thousand, six hundred".