28070408 has 16 divisors (see below), whose sum is σ = 52987500. Its totient is φ = 13940416.

The previous prime is 28070377. The next prime is 28070411. The reversal of 28070408 is 80407082.

It can be written as a sum of positive squares in 2 ways, for example, as 19201924 + 8868484 = 4382^2 + 2978^2 .

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, 10583 + ... + 12966.

Almost surely, 2^28070408 is an apocalyptic number.

It is an amenable number.

28070408 is a deficient number, since it is larger than the sum of its proper divisors (24917092).

28070408 is a wasteful number, since it uses less digits than its factorization.

28070408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23704 (or 23700 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 28070408 is about 5298.1513757159. The cubic root of 28070408 is about 303.9132081411.

The spelling of 28070408 in words is "twenty-eight million, seventy thousand, four hundred eight".