111987974 has 32 divisors (see below), whose sum is σ = 202015296. Its totient is φ = 45550080.

The previous prime is 111987973. The next prime is 111987977. The reversal of 111987974 is 479789111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111987973) 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 15 ways as a sum of consecutive naturals, for example, 18602 + ... + 23874.

It is an arithmetic number, because the mean of its divisors is an integer number (6312978).

Almost surely, 2^111987974 is an apocalyptic number.

111987974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111987974 is a deficient number, since it is larger than the sum of its proper divisors (90027322).

111987974 is a wasteful number, since it uses less digits than its factorization.

111987974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360.

The product of its digits is 127008, while the sum is 47.

The square root of 111987974 is about 10582.4370539115. The cubic root of 111987974 is about 482.0111996158.

The spelling of 111987974 in words is "one hundred eleven million, nine hundred eighty-seven thousand, nine hundred seventy-four".