28275264 has 56 divisors (see below), whose sum is σ = 83129120. Its totient is φ = 9424512.

The previous prime is 28275239. The next prime is 28275307. The reversal of 28275264 is 46257282.

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

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, 6454 + ... + 9909.

Almost surely, 2^28275264 is an apocalyptic number.

28275264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28275264 is an abundant number, since it is smaller than the sum of its proper divisors (54853856).

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

28275264 is a wasteful number, since it uses less digits than its factorization.

28275264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384 (or 16368 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28275264 is about 5317.4490124495. The cubic root of 28275264 is about 304.6507298112.

The spelling of 28275264 in words is "twenty-eight million, two hundred seventy-five thousand, two hundred sixty-four".