109102640 has 160 divisors (see below), whose sum is σ = 284981760. Its totient is φ = 38707200.

The previous prime is 109102633. The next prime is 109102649. The reversal of 109102640 is 46201901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (109102649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2661020 + ... + 2661060.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^109102640 is an apocalyptic number.

109102640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109102640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142490880).

109102640 is an abundant number, since it is smaller than the sum of its proper divisors (175879120).

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

109102640 is a wasteful number, since it uses less digits than its factorization.

109102640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 109102640 is about 10445.2209167638. The cubic root of 109102640 is about 477.8355088383.

The spelling of 109102640 in words is "one hundred nine million, one hundred two thousand, six hundred forty".