28651139600 has 60 divisors (see below), whose sum is σ = 68867258880. Its totient is φ = 11454979200.

The previous prime is 28651139597. The next prime is 28651139611. The reversal of 28651139600 is 693115682.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 879605 + ... + 911595.

It is an arithmetic number, because the mean of its divisors is an integer number (1147787648).

Almost surely, 2^28651139600 is an apocalyptic number.

28651139600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28651139600 is an abundant number, since it is smaller than the sum of its proper divisors (40216119280).

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

28651139600 is a wasteful number, since it uses less digits than its factorization.

28651139600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34248 (or 34237 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 28651139600 in words is "twenty-eight billion, six hundred fifty-one million, one hundred thirty-nine thousand, six hundred".