28866264 has 32 divisors (see below), whose sum is σ = 82475520. Its totient is φ = 8247456.

The previous prime is 28866251. The next prime is 28866307. The reversal of 28866264 is 46266882.

It is a super-2 number, since 2×28866264² = 1666522394635392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

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, 85744 + ... + 86079.

It is an arithmetic number, because the mean of its divisors is an integer number (2577360).

Almost surely, 2^28866264 is an apocalyptic number.

28866264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28866264 is an abundant number, since it is smaller than the sum of its proper divisors (53609256).

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

28866264 is a wasteful number, since it uses less digits than its factorization.

28866264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171839 (or 171835 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 28866264 is about 5372.7333825531. The cubic root of 28866264 is about 306.7586795939.

The spelling of 28866264 in words is "twenty-eight million, eight hundred sixty-six thousand, two hundred sixty-four".