28525268 has 24 divisors (see below), whose sum is σ = 50765568. Its totient is φ = 14023296.

The previous prime is 28525253. The next prime is 28525283. The reversal of 28525268 is 86252582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28525253) and next prime (28525283).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100655 + ... + 100937.

It is an arithmetic number, because the mean of its divisors is an integer number (2115232).

Almost surely, 2^28525268 is an apocalyptic number.

It is an amenable number.

28525268 is a deficient number, since it is larger than the sum of its proper divisors (22240300).

28525268 is a wasteful number, since it uses less digits than its factorization.

28525268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 621 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 28525268 is about 5340.9051667297. The cubic root of 28525268 is about 305.5459825443.

The spelling of 28525268 in words is "twenty-eight million, five hundred twenty-five thousand, two hundred sixty-eight".