109290780 has 72 divisors (see below), whose sum is σ = 333793824. Its totient is φ = 28944000.

The previous prime is 109290767. The next prime is 109290781. The reversal of 109290780 is 87092901.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109290781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25170 + ... + 29190.

Almost surely, 2^109290780 is an apocalyptic number.

109290780 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 109290780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166896912).

109290780 is an abundant number, since it is smaller than the sum of its proper divisors (224503044).

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

109290780 is a wasteful number, since it uses less digits than its factorization.

109290780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187 (or 4182 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 109290780 is about 10454.2230701282. The cubic root of 109290780 is about 478.1100159344.

The spelling of 109290780 in words is "one hundred nine million, two hundred ninety thousand, seven hundred eighty".