83983280 has 20 divisors (see below), whose sum is σ = 195261312. Its totient is φ = 33593280.

The previous prime is 83983271. The next prime is 83983283. The reversal of 83983280 is 8238938.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (83983283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524816 + ... + 524975.

Almost surely, 2^83983280 is an apocalyptic number.

83983280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83983280 is an abundant number, since it is smaller than the sum of its proper divisors (111278032).

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

83983280 is a wasteful number, since it uses less digits than its factorization.

83983280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049804 (or 1049798 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 83983280 is about 9164.2391937356. The cubic root of 83983280 is about 437.9228542987.

The spelling of 83983280 in words is "eighty-three million, nine hundred eighty-three thousand, two hundred eighty".