228632644 has 6 divisors (see below), whose sum is σ = 400107134. Its totient is φ = 114316320.

The previous prime is 228632633. The next prime is 228632659. The reversal of 228632644 is 446236822.

It can be written as a sum of positive squares in only one way, i.e., 228372544 + 260100 = 15112^2 + 510^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28579077 + ... + 28579084.

Almost surely, 2^228632644 is an apocalyptic number.

It is an amenable number.

228632644 is a deficient number, since it is larger than the sum of its proper divisors (171474490).

228632644 is a wasteful number, since it uses less digits than its factorization.

228632644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57158165 (or 57158163 counting only the distinct ones).

The product of its digits is 110592, while the sum is 37.

The square root of 228632644 is about 15120.6032948424. The cubic root of 228632644 is about 611.4759957122.

The spelling of 228632644 in words is "two hundred twenty-eight million, six hundred thirty-two thousand, six hundred forty-four".