228913956 has 18 divisors (see below), whose sum is σ = 578643702. Its totient is φ = 76304640.

The previous prime is 228913939. The next prime is 228913967. The reversal of 228913956 is 659319822.

228913956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 180472356 + 48441600 = 13434^2 + 6960^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3179325 + ... + 3179396.

Almost surely, 2^228913956 is an apocalyptic number.

It is an amenable number.

228913956 is an abundant number, since it is smaller than the sum of its proper divisors (349729746).

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

228913956 is a wasteful number, since it uses less digits than its factorization.

228913956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358731 (or 6358726 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 228913956 is about 15129.9027095352. The cubic root of 228913956 is about 611.7266817481.

The spelling of 228913956 in words is "two hundred twenty-eight million, nine hundred thirteen thousand, nine hundred fifty-six".