28524872 has 16 divisors (see below), whose sum is σ = 53678700. Its totient is φ = 14210560.

The previous prime is 28524863. The next prime is 28524877. The reversal of 28524872 is 27842582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28026436 + 498436 = 5294^2 + 706^2 .

It is not an unprimeable number, because it can be changed into a prime (28524877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4097 + ... + 8592.

Almost surely, 2^28524872 is an apocalyptic number.

It is an amenable number.

28524872 is a deficient number, since it is larger than the sum of its proper divisors (25153828).

28524872 is a wasteful number, since it uses less digits than its factorization.

28524872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12976 (or 12972 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 28524872 is about 5340.8680942334. The cubic root of 28524872 is about 305.5445686310.

The spelling of 28524872 in words is "twenty-eight million, five hundred twenty-four thousand, eight hundred seventy-two".