117520180 has 24 divisors (see below), whose sum is σ = 255303720. Its totient is φ = 45386880.

The previous prime is 117520171. The next prime is 117520181. The reversal of 117520180 is 81025711.

It can be written as a sum of positive squares in 4 ways, for example, as 49028004 + 68492176 = 7002^2 + 8276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117520181) 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, 100731 + ... + 101890.

It is an arithmetic number, because the mean of its divisors is an integer number (10637655).

Almost surely, 2^117520180 is an apocalyptic number.

117520180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117520180 is an abundant number, since it is smaller than the sum of its proper divisors (137783540).

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

117520180 is a wasteful number, since it uses less digits than its factorization.

117520180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202659 (or 202657 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 117520180 is about 10840.6724883653. The cubic root of 117520180 is about 489.8210925366.

Adding to 117520180 its reverse (81025711), we get a palindrome (198545891).

The spelling of 117520180 in words is "one hundred seventeen million, five hundred twenty thousand, one hundred eighty".