28755712 has 18 divisors (see below), whose sum is σ = 57399608. Its totient is φ = 14377728.

The previous prime is 28755707. The next prime is 28755731. The reversal of 28755712 is 21755782.

It is a super-3 number, since 3×28755712³ (a number of 23 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 55908 + ... + 56419.

Almost surely, 2^28755712 is an apocalyptic number.

It is an amenable number.

28755712 is a deficient number, since it is larger than the sum of its proper divisors (28643896).

28755712 is an equidigital number, since it uses as much as digits as its factorization.

28755712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112343 (or 112329 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 28755712 is about 5362.4352676746. The cubic root of 28755712 is about 306.3665705336.

The spelling of 28755712 in words is "twenty-eight million, seven hundred fifty-five thousand, seven hundred twelve".