117487816 has 32 divisors (see below), whose sum is σ = 241299000. Its totient is φ = 53380096.

The previous prime is 117487801. The next prime is 117487817. The reversal of 117487816 is 618784711.

It can be written as a sum of positive squares in 4 ways, for example, as 87347716 + 30140100 = 9346^2 + 5490^2 .

It is not an unprimeable number, because it can be changed into a prime (117487817) 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, 10951 + ... + 18838.

Almost surely, 2^117487816 is an apocalyptic number.

It is an amenable number.

117487816 is an abundant number, since it is smaller than the sum of its proper divisors (123811184).

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

117487816 is a wasteful number, since it uses less digits than its factorization.

117487816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29841 (or 29837 counting only the distinct ones).

The product of its digits is 75264, while the sum is 43.

The square root of 117487816 is about 10839.1796737576. The cubic root of 117487816 is about 489.7761243015.

The spelling of 117487816 in words is "one hundred seventeen million, four hundred eighty-seven thousand, eight hundred sixteen".