228862720 has 36 divisors (see below), whose sum is σ = 548200800. Its totient is φ = 91544576.

The previous prime is 228862717. The next prime is 228862769. The reversal of 228862720 is 27268822.

It is a self number, because there is not a number n which added to its sum of digits gives 228862720.

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, 88120 + ... + 90679.

It is an arithmetic number, because the mean of its divisors is an integer number (15227800).

Almost surely, 2^228862720 is an apocalyptic number.

228862720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228862720 is an abundant number, since it is smaller than the sum of its proper divisors (319338080).

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

228862720 is an equidigital number, since it uses as much as digits as its factorization.

228862720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178820 (or 178806 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 228862720 is about 15128.2094115596. The cubic root of 228862720 is about 611.6810390279.

The spelling of 228862720 in words is "two hundred twenty-eight million, eight hundred sixty-two thousand, seven hundred twenty".