28024375 has 10 divisors (see below), whose sum is σ = 35020040. Its totient is φ = 22419000.

The previous prime is 28024357. The next prime is 28024379. The reversal of 28024375 is 57342082.

It is not a de Polignac number, because 28024375 - 2⁷ = 28024247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28024379) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21795 + ... + 23044.

It is an arithmetic number, because the mean of its divisors is an integer number (3502004).

Almost surely, 2^28024375 is an apocalyptic number.

28024375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28024375 is a deficient number, since it is larger than the sum of its proper divisors (6995665).

28024375 is an frugal number, since it uses more digits than its factorization.

28024375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44859 (or 44844 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28024375 is about 5293.8053420956. The cubic root of 28024375 is about 303.7469869357.

The spelling of 28024375 in words is "twenty-eight million, twenty-four thousand, three hundred seventy-five".