117247881 has 8 divisors (see below), whose sum is σ = 156409344. Its totient is φ = 78125840.

The previous prime is 117247853. The next prime is 117247883. The reversal of 117247881 is 188742711.

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

It is a cyclic number.

It is not a de Polignac number, because 117247881 - 2¹⁵ = 117215113 is a prime.

It is a super-2 number, since 2×117247881² = 27494131197980322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117247883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025 + ... + 15446.

It is an arithmetic number, because the mean of its divisors is an integer number (19551168).

Almost surely, 2^117247881 is an apocalyptic number.

It is an amenable number.

117247881 is a deficient number, since it is larger than the sum of its proper divisors (39161463).

117247881 is a wasteful number, since it uses less digits than its factorization.

117247881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19711.

The product of its digits is 25088, while the sum is 39.

The square root of 117247881 is about 10828.1060670830. The cubic root of 117247881 is about 489.4424882255.

The spelling of 117247881 in words is "one hundred seventeen million, two hundred forty-seven thousand, eight hundred eighty-one".