28752512 has 16 divisors (see below), whose sum is σ = 57280650. Its totient is φ = 14376192.

The previous prime is 28752481. The next prime is 28752523. The reversal of 28752512 is 21525782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16192576 + 12559936 = 4024^2 + 3544^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112187 + ... + 112442.

Almost surely, 2^28752512 is an apocalyptic number.

It is an amenable number.

28752512 is a deficient number, since it is larger than the sum of its proper divisors (28528138).

28752512 is an equidigital number, since it uses as much as digits as its factorization.

28752512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224643 (or 224631 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 28752512 is about 5362.1368874731. The cubic root of 28752512 is about 306.3552057261.

The spelling of 28752512 in words is "twenty-eight million, seven hundred fifty-two thousand, five hundred twelve".