28831824 has 60 divisors (see below), whose sum is σ = 92219296. Its totient is φ = 8237376.

The previous prime is 28831819. The next prime is 28831849. The reversal of 28831824 is 42813882.

It is a happy number.

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

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13294 + ... + 15309.

Almost surely, 2^28831824 is an apocalyptic number.

28831824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28831824 is an abundant number, since it is smaller than the sum of its proper divisors (63387472).

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

28831824 is a wasteful number, since it uses less digits than its factorization.

28831824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28624 (or 28615 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 28831824 is about 5369.5273535014. The cubic root of 28831824 is about 306.6366343201.

The spelling of 28831824 in words is "twenty-eight million, eight hundred thirty-one thousand, eight hundred twenty-four".