109409280 has 176 divisors, whose sum is σ = 371407680. Its totient is φ = 27394048.

The previous prime is 109409273. The next prime is 109409303. The reversal of 109409280 is 82904901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260911 + ... + 261329.

Almost surely, 2^109409280 is an apocalyptic number.

109409280 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 109409280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185703840).

109409280 is an abundant number, since it is smaller than the sum of its proper divisors (261998400).

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

109409280 is a wasteful number, since it uses less digits than its factorization.

109409280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 109409280 is about 10459.8891007505. The cubic root of 109409280 is about 478.2827525932.

The spelling of 109409280 in words is "one hundred nine million, four hundred nine thousand, two hundred eighty".