109687988 has 24 divisors (see below), whose sum is σ = 204153600. Its totient is φ = 51418368.

The previous prime is 109687987. The next prime is 109688009. The reversal of 109687988 is 889786901.

It is a happy number.

It is a super-2 number, since 2×109687988² = 24062909422976288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109687987) 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 7 ways as a sum of consecutive naturals, for example, 68 + ... + 14811.

It is an arithmetic number, because the mean of its divisors is an integer number (8506400).

Almost surely, 2^109687988 is an apocalyptic number.

It is an amenable number.

109687988 is a deficient number, since it is larger than the sum of its proper divisors (94465612).

109687988 is a wasteful number, since it uses less digits than its factorization.

109687988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14999 (or 14997 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 109687988 is about 10473.2033304047. The cubic root of 109687988 is about 478.6885323079.

The spelling of 109687988 in words is "one hundred nine million, six hundred eighty-seven thousand, nine hundred eighty-eight".