228905836 has 6 divisors (see below), whose sum is σ = 400585220. Its totient is φ = 114452916.

The previous prime is 228905759. The next prime is 228905857. The reversal of 228905836 is 638509822.

It is a junction number, because it is equal to n+sod(n) for n = 228905792 and 228905801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28613226 + ... + 28613233.

Almost surely, 2^228905836 is an apocalyptic number.

It is an amenable number.

228905836 is a deficient number, since it is larger than the sum of its proper divisors (171679384).

228905836 is a wasteful number, since it uses less digits than its factorization.

228905836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57226463 (or 57226461 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 228905836 is about 15129.6343643857. The cubic root of 228905836 is about 611.7194486382.

The spelling of 228905836 in words is "two hundred twenty-eight million, nine hundred five thousand, eight hundred thirty-six".