109697920 has 32 divisors (see below), whose sum is σ = 262248120. Its totient is φ = 43878912.

The previous prime is 109697909. The next prime is 109697921. The reversal of 109697920 is 29796901.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109697921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85062 + ... + 86341.

Almost surely, 2^109697920 is an apocalyptic number.

109697920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109697920 is an abundant number, since it is smaller than the sum of its proper divisors (152550200).

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

109697920 is an equidigital number, since it uses as much as digits as its factorization.

109697920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171422 (or 171410 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 109697920 is about 10473.6774821454. The cubic root of 109697920 is about 478.7029799276.

The spelling of 109697920 in words is "one hundred nine million, six hundred ninety-seven thousand, nine hundred twenty".