228551556 has 24 divisors (see below), whose sum is σ = 540800064. Its totient is φ = 75110560.

The previous prime is 228551537. The next prime is 228551563. The reversal of 228551556 is 655155822.

It is a super-2 number, since 2×228551556² = 104471627500042272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133275 + ... + 134978.

It is an arithmetic number, because the mean of its divisors is an integer number (22533336).

Almost surely, 2^228551556 is an apocalyptic number.

It is an amenable number.

228551556 is an abundant number, since it is smaller than the sum of its proper divisors (312248508).

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

228551556 is a wasteful number, since it uses less digits than its factorization.

228551556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268331 (or 268329 counting only the distinct ones).

The product of its digits is 120000, while the sum is 39.

The square root of 228551556 is about 15117.9216825594. The cubic root of 228551556 is about 611.4036974500.

The spelling of 228551556 in words is "two hundred twenty-eight million, five hundred fifty-one thousand, five hundred fifty-six".