117309440 has 72 divisors (see below), whose sum is σ = 283114440. Its totient is φ = 46661632.

The previous prime is 117309421. The next prime is 117309457. The reversal of 117309440 is 44903711.

It is a super-2 number, since 2×117309440² = 27523009426227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655271 + ... + 655449.

It is an arithmetic number, because the mean of its divisors is an integer number (3932145).

Almost surely, 2^117309440 is an apocalyptic number.

117309440 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 117309440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141557220).

117309440 is an abundant number, since it is smaller than the sum of its proper divisors (165805000).

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

117309440 is an frugal number, since it uses more digits than its factorization.

117309440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 117309440 is about 10830.9482502688. The cubic root of 117309440 is about 489.5281310488.

The spelling of 117309440 in words is "one hundred seventeen million, three hundred nine thousand, four hundred forty".