109808790 has 256 divisors, whose sum is σ = 358041600. Its totient is φ = 20901888.

The previous prime is 109808747. The next prime is 109808801. The reversal of 109808790 is 97808901.

109808790 is a nontrivial binomial coefficient, being equal to C(14820, 2).

It is a super-2 number, since 2×109808790² = 24115940722528200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 1504194 + ... + 1504266.

It is an arithmetic number, because the mean of its divisors is an integer number (1398600).

Almost surely, 2^109808790 is an apocalyptic number.

109808790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109808790 is the 14819-th triangular number and also the 7410-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109808790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179020800).

109808790 is an abundant number, since it is smaller than the sum of its proper divisors (248232810).

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

109808790 is a wasteful number, since it uses less digits than its factorization.

109808790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 109808790 is about 10478.9689378297. The cubic root of 109808790 is about 478.8641982052.

The spelling of 109808790 in words is "one hundred nine million, eight hundred eight thousand, seven hundred ninety".