28349504 has 14 divisors (see below), whose sum is σ = 56256174. Its totient is φ = 14174720.

The previous prime is 28349479. The next prime is 28349549. The reversal of 28349504 is 40594382.

It can be written as a sum of positive squares in only one way, i.e., 14807104 + 13542400 = 3848^2 + 3680^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221417 + ... + 221544.

Almost surely, 2^28349504 is an apocalyptic number.

It is an amenable number.

28349504 is a deficient number, since it is larger than the sum of its proper divisors (27906670).

28349504 is an equidigital number, since it uses as much as digits as its factorization.

28349504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442973 (or 442963 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28349504 is about 5324.4252271959. The cubic root of 28349504 is about 304.9171287886.

The spelling of 28349504 in words is "twenty-eight million, three hundred forty-nine thousand, five hundred four".