111664252 has 18 divisors (see below), whose sum is σ = 223440392. Its totient is φ = 47832144.

The previous prime is 111664247. The next prime is 111664271. The reversal of 111664252 is 252466111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 111664252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54918 + ... + 56914.

Almost surely, 2^111664252 is an apocalyptic number.

It is an amenable number.

111664252 is an abundant number, since it is smaller than the sum of its proper divisors (111776140).

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

111664252 is an frugal number, since it uses more digits than its factorization.

111664252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005 (or 2006 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 111664252 is about 10567.1307363920. The cubic root of 111664252 is about 481.5463037947.

Multiplying 111664252 by its sum of digits (28), we get a square (3126599056 = 55916²).

111664252 divided by its sum of digits (28) gives a square (3988009 = 1997²).

The spelling of 111664252 in words is "one hundred eleven million, six hundred sixty-four thousand, two hundred fifty-two".