28525750 has 96 divisors (see below), whose sum is σ = 62741952. Its totient is φ = 9680000.

The previous prime is 28525691. The next prime is 28525753. The reversal of 28525750 is 5752582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525753) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 695730 + ... + 695770.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 2^28525750 is an apocalyptic number.

28525750 is an abundant number, since it is smaller than the sum of its proper divisors (34216202).

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

28525750 is a wasteful number, since it uses less digits than its factorization.

28525750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 28525750 is about 5340.9502899765. The cubic root of 28525750 is about 305.5477035019.

The spelling of 28525750 in words is "twenty-eight million, five hundred twenty-five thousand, seven hundred fifty".