117215620 has 12 divisors (see below), whose sum is σ = 246152844. Its totient is φ = 46886240.

The previous prime is 117215563. The next prime is 117215621. The reversal of 117215620 is 26512711.

It can be written as a sum of positive squares in 2 ways, for example, as 39740416 + 77475204 = 6304^2 + 8802^2 .

It is not an unprimeable number, because it can be changed into a prime (117215621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930371 + ... + 2930410.

It is an arithmetic number, because the mean of its divisors is an integer number (20512737).

Almost surely, 2^117215620 is an apocalyptic number.

117215620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117215620 is an abundant number, since it is smaller than the sum of its proper divisors (128937224).

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

117215620 is a wasteful number, since it uses less digits than its factorization.

117215620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860790 (or 5860788 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 117215620 is about 10826.6162765658. The cubic root of 117215620 is about 489.3975937324.

The spelling of 117215620 in words is "one hundred seventeen million, two hundred fifteen thousand, six hundred twenty".