117258678 has 96 divisors (see below), whose sum is σ = 279831552. Its totient is φ = 36741600.

The previous prime is 117258649. The next prime is 117258683. The reversal of 117258678 is 876852711.

It is a happy number.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 117258678 = 69³ + 489³ = 363³ + 411³.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 647748 + ... + 647928.

It is an arithmetic number, because the mean of its divisors is an integer number (2914912).

Almost surely, 2^117258678 is an apocalyptic number.

117258678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117258678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139915776).

117258678 is an abundant number, since it is smaller than the sum of its proper divisors (162572874).

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

117258678 is a wasteful number, since it uses less digits than its factorization.

117258678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 260 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The square root of 117258678 is about 10828.6046192480. The cubic root of 117258678 is about 489.4575115200.

The spelling of 117258678 in words is "one hundred seventeen million, two hundred fifty-eight thousand, six hundred seventy-eight".