117840540 has 24 divisors (see below), whose sum is σ = 329953680. Its totient is φ = 31424128.

The previous prime is 117840529. The next prime is 117840553. The reversal of 117840540 is 45048711.

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 = 117840498 and 117840507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981945 + ... + 982064.

It is an arithmetic number, because the mean of its divisors is an integer number (13748070).

Almost surely, 2^117840540 is an apocalyptic number.

117840540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117840540 is an abundant number, since it is smaller than the sum of its proper divisors (212113140).

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

117840540 is a wasteful number, since it uses less digits than its factorization.

117840540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964021 (or 1964019 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 117840540 is about 10855.4382684441. The cubic root of 117840540 is about 490.2657727995.

The spelling of 117840540 in words is "one hundred seventeen million, eight hundred forty thousand, five hundred forty".