28070624 has 24 divisors (see below), whose sum is σ = 57048768. Its totient is φ = 13582080.

The previous prime is 28070611. The next prime is 28070659. The reversal of 28070624 is 42607082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13157 + ... + 15140.

It is an arithmetic number, because the mean of its divisors is an integer number (2377032).

Almost surely, 2^28070624 is an apocalyptic number.

It is an amenable number.

28070624 is an abundant number, since it is smaller than the sum of its proper divisors (28978144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28070624 is a wasteful number, since it uses less digits than its factorization.

28070624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338 (or 28330 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28070624 is about 5298.1717601452. The cubic root of 28070624 is about 303.9139876701.

The spelling of 28070624 in words is "twenty-eight million, seventy thousand, six hundred twenty-four".