83984280 has 64 divisors (see below), whose sum is σ = 252771840. Its totient is φ = 22323072.

The previous prime is 83984269. The next prime is 83984281. The reversal of 83984280 is 8248938.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83984281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43087 + ... + 44993.

It is an arithmetic number, because the mean of its divisors is an integer number (3949560).

Almost surely, 2^83984280 is an apocalyptic number.

It is an amenable number.

83984280 is an abundant number, since it is smaller than the sum of its proper divisors (168787560).

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

83984280 is a wasteful number, since it uses less digits than its factorization.

83984280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2284 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 83984280 is about 9164.2937534760. The cubic root of 83984280 is about 437.9245924269.

The spelling of 83984280 in words is "eighty-three million, nine hundred eighty-four thousand, two hundred eighty".