228638044 has 12 divisors (see below), whose sum is σ = 405598144. Its totient is φ = 112752864.

The previous prime is 228638027. The next prime is 228638089. The reversal of 228638044 is 440836822.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 228637994 and 228638012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391212 + ... + 391795.

Almost surely, 2^228638044 is an apocalyptic number.

It is an amenable number.

228638044 is a deficient number, since it is larger than the sum of its proper divisors (176960100).

228638044 is a wasteful number, since it uses less digits than its factorization.

228638044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783084 (or 783082 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 228638044 is about 15120.7818580919. The cubic root of 228638044 is about 611.4808097585.

The spelling of 228638044 in words is "two hundred twenty-eight million, six hundred thirty-eight thousand, forty-four".