83209872 has 20 divisors (see below), whose sum is σ = 214958960. Its totient is φ = 27736608.

The previous prime is 83209871. The next prime is 83209877. The reversal of 83209872 is 27890238.

It is a self number, because there is not a number n which added to its sum of digits gives 83209872.

It is not an unprimeable number, because it can be changed into a prime (83209871) 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, 866722 + ... + 866817.

It is an arithmetic number, because the mean of its divisors is an integer number (10747948).

Almost surely, 2^83209872 is an apocalyptic number.

It is an amenable number.

83209872 is an abundant number, since it is smaller than the sum of its proper divisors (131749088).

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

83209872 is a wasteful number, since it uses less digits than its factorization.

83209872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733550 (or 1733544 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 83209872 is about 9121.9445295397. The cubic root of 83209872 is about 436.5744189367.

The spelling of 83209872 in words is "eighty-three million, two hundred nine thousand, eight hundred seventy-two".