228163956 has 24 divisors (see below), whose sum is σ = 555530304. Its totient is φ = 72747840.

The previous prime is 228163907. The next prime is 228163963. The reversal of 228163956 is 659361822.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413065 + ... + 413616.

It is an arithmetic number, because the mean of its divisors is an integer number (23147096).

Almost surely, 2^228163956 is an apocalyptic number.

It is an amenable number.

228163956 is an abundant number, since it is smaller than the sum of its proper divisors (327366348).

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

228163956 is a wasteful number, since it uses less digits than its factorization.

228163956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826711 (or 826709 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 228163956 is about 15105.0970205424. The cubic root of 228163956 is about 611.0578758941.

The spelling of 228163956 in words is "two hundred twenty-eight million, one hundred sixty-three thousand, nine hundred fifty-six".