28407152 has 40 divisors (see below), whose sum is σ = 56715120. Its totient is φ = 13777920.

The previous prime is 28407149. The next prime is 28407161. The reversal of 28407152 is 25170482.

It is a super-2 number, since 2×28407152² = 1613932569502208, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 117752 + ... + 117992.

It is an arithmetic number, because the mean of its divisors is an integer number (1417878).

Almost surely, 2^28407152 is an apocalyptic number.

It is an amenable number.

28407152 is a deficient number, since it is larger than the sum of its proper divisors (28307968).

28407152 is a wasteful number, since it uses less digits than its factorization.

28407152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 28407152 is about 5329.8360199916. The cubic root of 28407152 is about 305.1236692789.

The spelling of 28407152 in words is "twenty-eight million, four hundred seven thousand, one hundred fifty-two".