28763912940 has 48 divisors (see below), whose sum is σ = 92044522752. Its totient is φ = 6574608576.

The previous prime is 28763912939. The next prime is 28763912959. The reversal of 28763912940 is 4921936782.

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, 34242334 + ... + 34243173.

It is an arithmetic number, because the mean of its divisors is an integer number (1917594224).

Almost surely, 2^28763912940 is an apocalyptic number.

28763912940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28763912940 is an abundant number, since it is smaller than the sum of its proper divisors (63280609812).

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

28763912940 is a wasteful number, since it uses less digits than its factorization.

28763912940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68485526 (or 68485524 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 28763912940 in words is "twenty-eight billion, seven hundred sixty-three million, nine hundred twelve thousand, nine hundred forty".