83980780 has 24 divisors (see below), whose sum is σ = 189926352. Its totient is φ = 31008192.

The previous prime is 83980759. The next prime is 83980789. The reversal of 83980780 is 8708938.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (83980789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161242 + ... + 161761.

It is an arithmetic number, because the mean of its divisors is an integer number (7913598).

Almost surely, 2^83980780 is an apocalyptic number.

It is an amenable number.

83980780 is an abundant number, since it is smaller than the sum of its proper divisors (105945572).

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

83980780 is a wasteful number, since it uses less digits than its factorization.

83980780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323025 (or 323023 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 83980780 is about 9164.1027929634. The cubic root of 83980780 is about 437.9185089179.

The spelling of 83980780 in words is "eighty-three million, nine hundred eighty thousand, seven hundred eighty".