117702128 has 40 divisors (see below), whose sum is σ = 232224720. Its totient is φ = 57784320.

The previous prime is 117702119. The next prime is 117702139. The reversal of 117702128 is 821207711.

It is a self number, because there is not a number n which added to its sum of digits gives 117702128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280703 + ... + 281121.

It is an arithmetic number, because the mean of its divisors is an integer number (5805618).

Almost surely, 2^117702128 is an apocalyptic number.

It is an amenable number.

117702128 is a deficient number, since it is larger than the sum of its proper divisors (114522592).

117702128 is a wasteful number, since it uses less digits than its factorization.

117702128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 117702128 is about 10849.0611575380. The cubic root of 117702128 is about 490.0737470565.

Adding to 117702128 its reverse (821207711), we get a palindrome (938909839).

The spelling of 117702128 in words is "one hundred seventeen million, seven hundred two thousand, one hundred twenty-eight".