28707952 has 40 divisors (see below), whose sum is σ = 68460896. Its totient is φ = 11356416.

The previous prime is 28707947. The next prime is 28707977. The reversal of 28707952 is 25970782.

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 7 ways as a sum of consecutive naturals, for example, 8403 + ... + 11314.

Almost surely, 2^28707952 is an apocalyptic number.

It is an amenable number.

28707952 is an abundant number, since it is smaller than the sum of its proper divisors (39752944).

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

28707952 is a wasteful number, since it uses less digits than its factorization.

28707952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19745 (or 19739 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 28707952 is about 5357.9802164622. The cubic root of 28707952 is about 306.1968630840.

The spelling of 28707952 in words is "twenty-eight million, seven hundred seven thousand, nine hundred fifty-two".