117238440 has 64 divisors (see below), whose sum is σ = 383693760. Its totient is φ = 28421120.

The previous prime is 117238439. The next prime is 117238441. The reversal of 117238440 is 44832711.

It is an interprime number because it is at equal distance from previous prime (117238439) and next prime (117238441).

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 = 117238398 and 117238407.

It is not an unprimeable number, because it can be changed into a prime (117238441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43089 + ... + 45728.

It is an arithmetic number, because the mean of its divisors is an integer number (5995215).

Almost surely, 2^117238440 is an apocalyptic number.

117238440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117238440 is an abundant number, since it is smaller than the sum of its proper divisors (266455320).

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

117238440 is a wasteful number, since it uses less digits than its factorization.

117238440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88842 (or 88838 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 117238440 is about 10827.6701094926. The cubic root of 117238440 is about 489.4293509573.

The spelling of 117238440 in words is "one hundred seventeen million, two hundred thirty-eight thousand, four hundred forty".