83856372 has 24 divisors (see below), whose sum is σ = 195921600. Its totient is φ = 27915456.

The previous prime is 83856323. The next prime is 83856373. The reversal of 83856372 is 27365838.

It is a super-2 number, since 2×83856372² = 14063782250004768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83856373) 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, 5904 + ... + 14232.

It is an arithmetic number, because the mean of its divisors is an integer number (8163400).

Almost surely, 2^83856372 is an apocalyptic number.

It is an amenable number.

83856372 is an abundant number, since it is smaller than the sum of its proper divisors (112065228).

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

83856372 is a wasteful number, since it uses less digits than its factorization.

83856372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175 (or 9173 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 83856372 is about 9157.3124878427. The cubic root of 83856372 is about 437.7021598506.

The spelling of 83856372 in words is "eighty-three million, eight hundred fifty-six thousand, three hundred seventy-two".