111986940 has 48 divisors (see below), whose sum is σ = 337686048. Its totient is φ = 27565824.

The previous prime is 111986923. The next prime is 111986957. The reversal of 111986940 is 49689111.

It is an interprime number because it is at equal distance from previous prime (111986923) and next prime (111986957).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71007 + ... + 72566.

It is an arithmetic number, because the mean of its divisors is an integer number (7035126).

Almost surely, 2^111986940 is an apocalyptic number.

111986940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111986940 is an abundant number, since it is smaller than the sum of its proper divisors (225699108).

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

111986940 is a wasteful number, since it uses less digits than its factorization.

111986940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143598 (or 143596 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 111986940 is about 10582.3881992677. The cubic root of 111986940 is about 482.0097161199.

The spelling of 111986940 in words is "one hundred eleven million, nine hundred eighty-six thousand, nine hundred forty".