117288886 has 32 divisors (see below), whose sum is σ = 207412128. Its totient is φ = 49040640.

The previous prime is 117288883. The next prime is 117288887. The reversal of 117288886 is 688882711.

117288886 = 294² + 295² + ... + 722².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117288883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113026 + ... + 114058.

It is an arithmetic number, because the mean of its divisors is an integer number (6481629).

Almost surely, 2^117288886 is an apocalyptic number.

117288886 is a deficient number, since it is larger than the sum of its proper divisors (90123242).

117288886 is a wasteful number, since it uses less digits than its factorization.

117288886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its digits is 344064, while the sum is 49.

The square root of 117288886 is about 10829.9993536473. Note that the first 3 decimals coincide. The cubic root of 117288886 is about 489.4995390079.

The spelling of 117288886 in words is "one hundred seventeen million, two hundred eighty-eight thousand, eight hundred eighty-six".