111920080 has 40 divisors (see below), whose sum is σ = 261402912. Its totient is φ = 44563584.

The previous prime is 111920071. The next prime is 111920117. The reversal of 111920080 is 80029111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×111920080² = 25052208614412800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15079 + ... + 21241.

Almost surely, 2^111920080 is an apocalyptic number.

111920080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111920080 is an abundant number, since it is smaller than the sum of its proper divisors (149482832).

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

111920080 is a wasteful number, since it uses less digits than its factorization.

111920080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403 (or 6397 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 111920080 is about 10579.2287053452. The cubic root of 111920080 is about 481.9137716424.

Adding to 111920080 its reverse (80029111), we get a palindrome (191949191).

The spelling of 111920080 in words is "one hundred eleven million, nine hundred twenty thousand, eighty".