28618625508 has 48 divisors (see below), whose sum is σ = 75197337600. Its totient is φ = 8392557600.

The previous prime is 28618625461. The next prime is 28618625561. The reversal of 28618625508 is 80552681682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3492808 + ... + 3500991.

It is an arithmetic number, because the mean of its divisors is an integer number (1566611200).

Almost surely, 2^28618625508 is an apocalyptic number.

It is an amenable number.

28618625508 is an abundant number, since it is smaller than the sum of its proper divisors (46578712092).

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

28618625508 is a wasteful number, since it uses less digits than its factorization.

28618625508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6993848 (or 6993846 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The spelling of 28618625508 in words is "twenty-eight billion, six hundred eighteen million, six hundred twenty-five thousand, five hundred eight".