117146440 has 32 divisors (see below), whose sum is σ = 270706680. Its totient is φ = 45591552.

The previous prime is 117146437. The next prime is 117146441. The reversal of 117146440 is 44641711.

It can be written as a sum of positive squares in 4 ways, for example, as 116251524 + 894916 = 10782^2 + 946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 117146399 and 117146408.

It is not an unprimeable number, because it can be changed into a prime (117146441) 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, 38097 + ... + 41056.

Almost surely, 2^117146440 is an apocalyptic number.

117146440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117146440 is an abundant number, since it is smaller than the sum of its proper divisors (153560240).

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

117146440 is a wasteful number, since it uses less digits than its factorization.

117146440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79201 (or 79197 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 117146440 is about 10823.4209009906. The cubic root of 117146440 is about 489.3012948820.

The spelling of 117146440 in words is "one hundred seventeen million, one hundred forty-six thousand, four hundred forty".