117561732 has 72 divisors (see below), whose sum is σ = 295014720. Its totient is φ = 36426240.

The previous prime is 117561713. The next prime is 117561739. The reversal of 117561732 is 237165711.

It is a junction number, because it is equal to n+sod(n) for n = 117561693 and 117561702.

It is not an unprimeable number, because it can be changed into a prime (117561739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377857 + ... + 378167.

Almost surely, 2^117561732 is an apocalyptic number.

117561732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117561732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147507360).

117561732 is an abundant number, since it is smaller than the sum of its proper divisors (177452988).

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

117561732 is a wasteful number, since it uses less digits than its factorization.

117561732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 442 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 117561732 is about 10842.5888052623. The cubic root of 117561732 is about 489.8788149571.

The spelling of 117561732 in words is "one hundred seventeen million, five hundred sixty-one thousand, seven hundred thirty-two".