111897690 has 32 divisors (see below), whose sum is σ = 268833600. Its totient is φ = 29808384.

The previous prime is 111897683. The next prime is 111897697. The reversal of 111897690 is 96798111.

It is an interprime number because it is at equal distance from previous prime (111897683) and next prime (111897697).

It is a super-2 number, since 2×111897690² = 25042186054672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111897697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52261 + ... + 54359.

It is an arithmetic number, because the mean of its divisors is an integer number (8401050).

Almost surely, 2^111897690 is an apocalyptic number.

111897690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111897690 is an abundant number, since it is smaller than the sum of its proper divisors (156935910).

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

111897690 is a wasteful number, since it uses less digits than its factorization.

111897690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 111897690 is about 10578.1704467266. The cubic root of 111897690 is about 481.8816333256.

The spelling of 111897690 in words is "one hundred eleven million, eight hundred ninety-seven thousand, six hundred ninety".