28024872 has 16 divisors (see below), whose sum is σ = 70062240. Its totient is φ = 9341616.

The previous prime is 28024861. The next prime is 28024883. The reversal of 28024872 is 27842082.

It is an interprime number because it is at equal distance from previous prime (28024861) and next prime (28024883).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583828 + ... + 583875.

It is an arithmetic number, because the mean of its divisors is an integer number (4378890).

Almost surely, 2^28024872 is an apocalyptic number.

It is an amenable number.

28024872 is an abundant number, since it is smaller than the sum of its proper divisors (42037368).

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

28024872 is a wasteful number, since it uses less digits than its factorization.

28024872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167712 (or 1167708 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 28024872 is about 5293.8522835455. The cubic root of 28024872 is about 303.7487825317.

It can be divided in two parts, 280 and 24872, that added together give a palindrome (25152).

The spelling of 28024872 in words is "twenty-eight million, twenty-four thousand, eight hundred seventy-two".