28746404 has 12 divisors (see below), whose sum is σ = 50372700. Its totient is φ = 14354208.

The previous prime is 28746397. The next prime is 28746413. The reversal of 28746404 is 40464782.

It can be written as a sum of positive squares in 2 ways, for example, as 14668900 + 14077504 = 3830^2 + 3752^2 .

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, 1019 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (4197725).

Almost surely, 2^28746404 is an apocalyptic number.

It is an amenable number.

28746404 is a deficient number, since it is larger than the sum of its proper divisors (21626296).

28746404 is a wasteful number, since it uses less digits than its factorization.

28746404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 28746404 is about 5361.5673081665. The cubic root of 28746404 is about 306.3335108087. Note that the first 3 decimals are identical.

The spelling of 28746404 in words is "twenty-eight million, seven hundred forty-six thousand, four hundred four".