109172880 has 80 divisors (see below), whose sum is σ = 376047360. Its totient is φ = 29112192.

The previous prime is 109172867. The next prime is 109172891. The reversal of 109172880 is 88271901.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 23112 + ... + 27431.

It is an arithmetic number, because the mean of its divisors is an integer number (4700592).

Almost surely, 2^109172880 is an apocalyptic number.

109172880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109172880 is an abundant number, since it is smaller than the sum of its proper divisors (266874480).

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

109172880 is a wasteful number, since it uses less digits than its factorization.

109172880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50565 (or 50553 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 109172880 is about 10448.5826790048. The cubic root of 109172880 is about 477.9380299325.

The spelling of 109172880 in words is "one hundred nine million, one hundred seventy-two thousand, eight hundred eighty".