28257952 has 12 divisors (see below), whose sum is σ = 55632906. Its totient is φ = 14128960.

The previous prime is 28257949. The next prime is 28258001. The reversal of 28257952 is 25975282.

It can be written as a sum of positive squares in only one way, i.e., 16941456 + 11316496 = 4116^2 + 3364^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 441499 + ... + 441562.

Almost surely, 2^28257952 is an apocalyptic number.

It is an amenable number.

28257952 is a deficient number, since it is larger than the sum of its proper divisors (27374954).

28257952 is an equidigital number, since it uses as much as digits as its factorization.

28257952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883071 (or 883063 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 28257952 is about 5315.8209149669. The cubic root of 28257952 is about 304.5885412944.

The spelling of 28257952 in words is "twenty-eight million, two hundred fifty-seven thousand, nine hundred fifty-two".