28315683660 has 96 divisors (see below), whose sum is σ = 91043769600. Its totient is φ = 6503120640.

The previous prime is 28315683637. The next prime is 28315683689. The reversal of 28315683660 is 6638651382.

It is a super-2 number, since 2×28315683660² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1116475 + ... + 1141554.

It is an arithmetic number, because the mean of its divisors is an integer number (948372600).

Almost surely, 2^28315683660 is an apocalyptic number.

28315683660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28315683660 is an abundant number, since it is smaller than the sum of its proper divisors (62728085940).

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

28315683660 is a wasteful number, since it uses less digits than its factorization.

28315683660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258071 (or 2258069 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 28315683660 in words is "twenty-eight billion, three hundred fifteen million, six hundred eighty-three thousand, six hundred sixty".