28877824 has 22 divisors (see below), whose sum is σ = 57729494. Its totient is φ = 14438400.

The previous prime is 28877809. The next prime is 28877843. The reversal of 28877824 is 42877882.

It can be written as a sum of positive squares in only one way, i.e., 26214400 + 2663424 = 5120^2 + 1632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13077 + ... + 15124.

Almost surely, 2^28877824 is an apocalyptic number.

It is an amenable number.

28877824 is a deficient number, since it is larger than the sum of its proper divisors (28851670).

28877824 is an equidigital number, since it uses as much as digits as its factorization.

28877824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28221 (or 28203 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 28877824 is about 5373.8090773677. The cubic root of 28877824 is about 306.7996230873.

The spelling of 28877824 in words is "twenty-eight million, eight hundred seventy-seven thousand, eight hundred twenty-four".