28625568 has 48 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 9282816.

The previous prime is 28625557. The next prime is 28625579. The reversal of 28625568 is 86552682.

It is an interprime number because it is at equal distance from previous prime (28625557) and next prime (28625579).

It is a tau number, because it is divible by the number of its divisors (48).

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 in 7 ways as a sum of consecutive naturals, for example, 478 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (1607970).

Almost surely, 2^28625568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28625568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38591280).

28625568 is an abundant number, since it is smaller than the sum of its proper divisors (48556992).

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

28625568 is a wasteful number, since it uses less digits than its factorization.

28625568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109 (or 8101 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 28625568 is about 5350.2867212889. The cubic root of 28625568 is about 305.9036819331.

The spelling of 28625568 in words is "twenty-eight million, six hundred twenty-five thousand, five hundred sixty-eight".