109617920 has 36 divisors (see below), whose sum is σ = 262572240. Its totient is φ = 43846656.

The previous prime is 109617919. The next prime is 109617923. The reversal of 109617920 is 29716901.

It is not an unprimeable number, because it can be changed into a prime (109617923) 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, 41540 + ... + 44099.

Almost surely, 2^109617920 is an apocalyptic number.

109617920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109617920 is an abundant number, since it is smaller than the sum of its proper divisors (152954320).

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

109617920 is an frugal number, since it uses more digits than its factorization.

109617920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85660 (or 85646 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 109617920 is about 10469.8576876670. The cubic root of 109617920 is about 478.5865828508.

It can be divided in two parts, 10961 and 7920, that added together give a palindrome (18881).

The spelling of 109617920 in words is "one hundred nine million, six hundred seventeen thousand, nine hundred twenty".