111390020 has 24 divisors (see below), whose sum is σ = 267336384. Its totient is φ = 38190816.

The previous prime is 111390011. The next prime is 111390023. The reversal of 111390020 is 20093111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111390023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397682 + ... + 397961.

It is an arithmetic number, because the mean of its divisors is an integer number (11139016).

Almost surely, 2^111390020 is an apocalyptic number.

111390020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111390020 is an abundant number, since it is smaller than the sum of its proper divisors (155946364).

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

111390020 is a wasteful number, since it uses less digits than its factorization.

111390020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795659 (or 795657 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 111390020 is about 10554.1470522255. The cubic root of 111390020 is about 481.1517768844.

The spelling of 111390020 in words is "one hundred eleven million, three hundred ninety thousand, twenty".