117636838 has 32 divisors (see below), whose sum is σ = 209353248. Its totient is φ = 48960000.

The previous prime is 117636829. The next prime is 117636877. The reversal of 117636838 is 838636711.

It is a junction number, because it is equal to n+sod(n) for n = 117636794 and 117636803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9588 + ... + 18088.

It is an arithmetic number, because the mean of its divisors is an integer number (6542289).

Almost surely, 2^117636838 is an apocalyptic number.

117636838 is a deficient number, since it is larger than the sum of its proper divisors (91716410).

117636838 is a wasteful number, since it uses less digits than its factorization.

117636838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568.

The product of its digits is 145152, while the sum is 43.

The square root of 117636838 is about 10846.0517240146. The cubic root of 117636838 is about 489.9831147867.

The spelling of 117636838 in words is "one hundred seventeen million, six hundred thirty-six thousand, eight hundred thirty-eight".