117787738 has 8 divisors (see below), whose sum is σ = 184363488. Its totient is φ = 56333244.

The previous prime is 117787729. The next prime is 117787739. The reversal of 117787738 is 837787711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 117787691 and 117787700.

It is not an unprimeable number, because it can be changed into a prime (117787739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280256 + ... + 1280347.

It is an arithmetic number, because the mean of its divisors is an integer number (23045436).

Almost surely, 2^117787738 is an apocalyptic number.

117787738 is a deficient number, since it is larger than the sum of its proper divisors (66575750).

117787738 is a wasteful number, since it uses less digits than its factorization.

117787738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560628.

The product of its digits is 460992, while the sum is 49.

The square root of 117787738 is about 10853.0059430556. The cubic root of 117787738 is about 490.1925357489.

The spelling of 117787738 in words is "one hundred seventeen million, seven hundred eighty-seven thousand, seven hundred thirty-eight".