228178536 has 16 divisors (see below), whose sum is σ = 570446400. Its totient is φ = 76059504.

The previous prime is 228178501. The next prime is 228178541. The reversal of 228178536 is 635871822.

It is a super-2 number, since 2×228178536² = 104130888582206592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 4753696 + ... + 4753743.

It is an arithmetic number, because the mean of its divisors is an integer number (35652900).

Almost surely, 2^228178536 is an apocalyptic number.

It is an amenable number.

228178536 is an abundant number, since it is smaller than the sum of its proper divisors (342267864).

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

228178536 is a wasteful number, since it uses less digits than its factorization.

228178536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507448 (or 9507444 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 228178536 is about 15105.5796313812. The cubic root of 228178536 is about 611.0708914381.

The spelling of 228178536 in words is "two hundred twenty-eight million, one hundred seventy-eight thousand, five hundred thirty-six".