109168780 has 72 divisors (see below), whose sum is σ = 268456608. Its totient is φ = 36529152.

The previous prime is 109168771. The next prime is 109168811. The reversal of 109168780 is 87861901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309084 + ... + 309436.

It is an arithmetic number, because the mean of its divisors is an integer number (3728564).

Almost surely, 2^109168780 is an apocalyptic number.

109168780 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 109168780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134228304).

109168780 is an abundant number, since it is smaller than the sum of its proper divisors (159287828).

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

109168780 is a wasteful number, since it uses less digits than its factorization.

109168780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 109168780 is about 10448.3864783037. The cubic root of 109168780 is about 477.9320468518.

The spelling of 109168780 in words is "one hundred nine million, one hundred sixty-eight thousand, seven hundred eighty".