228304536 has 16 divisors (see below), whose sum is σ = 570761400. Its totient is φ = 76101504.

The previous prime is 228304529. The next prime is 228304567. The reversal of 228304536 is 635403822.

It is a happy number.

It is a super-2 number, since 2×228304536² = 104245922316350592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228304497 and 228304506.

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, 4756321 + ... + 4756368.

Almost surely, 2^228304536 is an apocalyptic number.

It is an amenable number.

228304536 is an abundant number, since it is smaller than the sum of its proper divisors (342456864).

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

228304536 is a wasteful number, since it uses less digits than its factorization.

228304536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512698 (or 9512694 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 228304536 is about 15109.7497001109. The cubic root of 228304536 is about 611.1833483558.

The spelling of 228304536 in words is "two hundred twenty-eight million, three hundred four thousand, five hundred thirty-six".