83508780 has 48 divisors (see below), whose sum is σ = 237129984. Its totient is φ = 21954240.

The previous prime is 83508773. The next prime is 83508793. The reversal of 83508780 is 8780538.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 5542 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (4940208).

Almost surely, 2^83508780 is an apocalyptic number.

It is an amenable number.

83508780 is an abundant number, since it is smaller than the sum of its proper divisors (153621204).

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

83508780 is a wasteful number, since it uses less digits than its factorization.

83508780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19686 (or 19684 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 83508780 is about 9138.3138488454. The cubic root of 83508780 is about 437.0965510595.

The spelling of 83508780 in words is "eighty-three million, five hundred eight thousand, seven hundred eighty".