228201664 has 28 divisors (see below), whose sum is σ = 467449408. Its totient is φ = 110419200.

The previous prime is 228201599. The next prime is 228201679. The reversal of 228201664 is 466102822.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55527 + ... + 59494.

Almost surely, 2^228201664 is an apocalyptic number.

It is an amenable number.

228201664 is an abundant number, since it is smaller than the sum of its proper divisors (239247744).

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

228201664 is a wasteful number, since it uses less digits than its factorization.

228201664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115064 (or 115054 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 228201664 is about 15106.3451569200. The cubic root of 228201664 is about 611.0915366317.

The spelling of 228201664 in words is "two hundred twenty-eight million, two hundred one thousand, six hundred sixty-four".