228810816 has 84 divisors (see below), whose sum is σ = 706317612. Its totient is φ = 70401024.

The previous prime is 228810809. The next prime is 228810821. The reversal of 228810816 is 618018822.

It can be written as a sum of positive squares in 2 ways, for example, as 24206400 + 204604416 = 4920^2 + 14304^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7791 + ... + 22766.

It is an arithmetic number, because the mean of its divisors is an integer number (8408543).

Almost surely, 2^228810816 is an apocalyptic number.

228810816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

228810816 is an abundant number, since it is smaller than the sum of its proper divisors (477506796).

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

228810816 is a wasteful number, since it uses less digits than its factorization.

228810816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30588 (or 30575 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 228810816 is about 15126.4938435845. The cubic root of 228810816 is about 611.6347942848.

The spelling of 228810816 in words is "two hundred twenty-eight million, eight hundred ten thousand, eight hundred sixteen".