228400880 has 40 divisors (see below), whose sum is σ = 531660912. Its totient is φ = 91252224.

The previous prime is 228400877. The next prime is 228400891. The reversal of 228400880 is 88004822.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131699 + ... + 133421.

Almost surely, 2^228400880 is an apocalyptic number.

228400880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228400880 is an abundant number, since it is smaller than the sum of its proper divisors (303260032).

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

228400880 is a wasteful number, since it uses less digits than its factorization.

228400880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393 (or 3387 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 228400880 is about 15112.9375040063. The cubic root of 228400880 is about 611.2693089307.

The spelling of 228400880 in words is "two hundred twenty-eight million, four hundred thousand, eight hundred eighty".