228857909328 has 70 divisors (see below), whose sum is σ = 664814209274. Its totient is φ = 76285965888.

The previous prime is 228857909219. The next prime is 228857909407. The reversal of 228857909328 is 823909758822.

228857909328 is a `hidden beast` number, since 2 + 28 + 8 + 579 + 0 + 9 + 32 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 223869029904 + 4988879424 = 473148^2 + 70632^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 9798775 + ... + 9822102.

Almost surely, 2^228857909328 is an apocalyptic number.

It is an amenable number.

228857909328 is an abundant number, since it is smaller than the sum of its proper divisors (435956299946).

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

228857909328 is an equidigital number, since it uses as much as digits as its factorization.

228857909328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19620903 (or 19620882 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 228857909328 in words is "two hundred twenty-eight billion, eight hundred fifty-seven million, nine hundred nine thousand, three hundred twenty-eight".