83861800 has 48 divisors (see below), whose sum is σ = 212709600. Its totient is φ = 30494400.

The previous prime is 83861773. The next prime is 83861803. The reversal of 83861800 is 816838.

It is not an unprimeable number, because it can be changed into a prime (83861803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16860 + ... + 21259.

It is an arithmetic number, because the mean of its divisors is an integer number (4431450).

Almost surely, 2^83861800 is an apocalyptic number.

It is an amenable number.

83861800 is an abundant number, since it is smaller than the sum of its proper divisors (128847800).

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

83861800 is a wasteful number, since it uses less digits than its factorization.

83861800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38146 (or 38137 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 83861800 is about 9157.6088582118. The cubic root of 83861800 is about 437.7116037605.

The spelling of 83861800 in words is "eighty-three million, eight hundred sixty-one thousand, eight hundred".