109915380 has 120 divisors (see below), whose sum is σ = 363058080. Its totient is φ = 27760320.

The previous prime is 109915369. The next prime is 109915381. The reversal of 109915380 is 83519901.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 (109915381) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28995 + ... + 32565.

It is an arithmetic number, because the mean of its divisors is an integer number (3025484).

Almost surely, 2^109915380 is an apocalyptic number.

109915380 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 109915380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181529040).

109915380 is an abundant number, since it is smaller than the sum of its proper divisors (253142700).

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

109915380 is a wasteful number, since it uses less digits than its factorization.

109915380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3600 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 109915380 is about 10484.0536053570. The cubic root of 109915380 is about 479.0190905669.

The spelling of 109915380 in words is "one hundred nine million, nine hundred fifteen thousand, three hundred eighty".