111697920 has 224 divisors, whose sum is σ = 401055840. Its totient is φ = 29491200.

The previous prime is 111697909. The next prime is 111697933. The reversal of 111697920 is 29796111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1105870 + ... + 1105970.

Almost surely, 2^111697920 is an apocalyptic number.

111697920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200527920).

111697920 is an abundant number, since it is smaller than the sum of its proper divisors (289357920).

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

111697920 is an equidigital number, since it uses as much as digits as its factorization.

111697920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 111697920 is about 10568.7236693936. The cubic root of 111697920 is about 481.5946961002.

The spelling of 111697920 in words is "one hundred eleven million, six hundred ninety-seven thousand, nine hundred twenty".