28790262940 has 24 divisors (see below), whose sum is σ = 60830476560. Its totient is φ = 11445452928.

The previous prime is 28790262913. The next prime is 28790262983. The reversal of 28790262940 is 4926209782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412425 + ... + 4418944.

It is an arithmetic number, because the mean of its divisors is an integer number (2534603190).

Almost surely, 2^28790262940 is an apocalyptic number.

28790262940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28790262940 is an abundant number, since it is smaller than the sum of its proper divisors (32040213620).

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

28790262940 is a wasteful number, since it uses less digits than its factorization.

28790262940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8831541 (or 8831539 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 28790262940 in words is "twenty-eight billion, seven hundred ninety million, two hundred sixty-two thousand, nine hundred forty".