28520752 has 20 divisors (see below), whose sum is σ = 59510080. Its totient is φ = 13163328.

The previous prime is 28520711. The next prime is 28520773. The reversal of 28520752 is 25702582.

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, 68352 + ... + 68767.

It is an arithmetic number, because the mean of its divisors is an integer number (2975504).

Almost surely, 2^28520752 is an apocalyptic number.

It is an amenable number.

28520752 is an abundant number, since it is smaller than the sum of its proper divisors (30989328).

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

28520752 is a wasteful number, since it uses less digits than its factorization.

28520752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137140 (or 137134 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 28520752 is about 5340.4823752167. The cubic root of 28520752 is about 305.5298574433.

The spelling of 28520752 in words is "twenty-eight million, five hundred twenty thousand, seven hundred fifty-two".