8111900 has 18 divisors (see below), whose sum is σ = 17603040. Its totient is φ = 3244720.

The previous prime is 8111849. The next prime is 8111903. The reversal of 8111900 is 91118.

It is a super-2 number, since 2×8111900² = 131605843220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8111903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40460 + ... + 40659.

Almost surely, 2^8111900 is an apocalyptic number.

It is an amenable number.

8111900 is an abundant number, since it is smaller than the sum of its proper divisors (9491140).

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

8111900 is a wasteful number, since it uses less digits than its factorization.

8111900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81133 (or 81126 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 8111900 is about 2848.1397437626. The cubic root of 8111900 is about 200.9281856928.

The spelling of 8111900 in words is "eight million, one hundred eleven thousand, nine hundred".