28257752 has 8 divisors (see below), whose sum is σ = 52983300. Its totient is φ = 14128872.

The previous prime is 28257743. The next prime is 28257773. The reversal of 28257752 is 25775282.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1766102 + ... + 1766117.

Almost surely, 2^28257752 is an apocalyptic number.

It is an amenable number.

28257752 is a deficient number, since it is larger than the sum of its proper divisors (24725548).

28257752 is a wasteful number, since it uses less digits than its factorization.

28257752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532225 (or 3532221 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 28257752 is about 5315.8021031637. The cubic root of 28257752 is about 304.5878227020.

The spelling of 28257752 in words is "twenty-eight million, two hundred fifty-seven thousand, seven hundred fifty-two".