117157812 has 48 divisors (see below), whose sum is σ = 290771712. Its totient is φ = 36587520.

The previous prime is 117157771. The next prime is 117157823. The reversal of 117157812 is 218751711.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47973 + ... + 50355.

It is an arithmetic number, because the mean of its divisors is an integer number (6057744).

Almost surely, 2^117157812 is an apocalyptic number.

117157812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117157812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145385856).

117157812 is an abundant number, since it is smaller than the sum of its proper divisors (173613900).

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

117157812 is a wasteful number, since it uses less digits than its factorization.

117157812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648 (or 2646 counting only the distinct ones).

The product of its digits is 3920, while the sum is 33.

The square root of 117157812 is about 10823.9462304651. The cubic root of 117157812 is about 489.3171273571.

The spelling of 117157812 in words is "one hundred seventeen million, one hundred fifty-seven thousand, eight hundred twelve".