117280740 has 24 divisors (see below), whose sum is σ = 328386240. Its totient is φ = 31274848.

The previous prime is 117280721. The next prime is 117280741. The reversal of 117280740 is 47082711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 117280698 and 117280707.

It is not an unprimeable number, because it can be changed into a prime (117280741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977280 + ... + 977399.

It is an arithmetic number, because the mean of its divisors is an integer number (13682760).

Almost surely, 2^117280740 is an apocalyptic number.

117280740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117280740 is an abundant number, since it is smaller than the sum of its proper divisors (211105500).

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

117280740 is a wasteful number, since it uses less digits than its factorization.

117280740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954691 (or 1954689 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 117280740 is about 10829.6232621454. The cubic root of 117280740 is about 489.4882064321.

The spelling of 117280740 in words is "one hundred seventeen million, two hundred eighty thousand, seven hundred forty".