117282981 has 8 divisors (see below), whose sum is σ = 156436000. Its totient is φ = 78159312.

The previous prime is 117282967. The next prime is 117283027. The reversal of 117282981 is 189282711.

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

It is not a de Polignac number, because 117282981 - 2⁷ = 117282853 is a prime.

It is a super-2 number, since 2×117282981² = 27510595264492722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117282941) 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, 4911 + ... + 16083.

It is an arithmetic number, because the mean of its divisors is an integer number (19554500).

Almost surely, 2^117282981 is an apocalyptic number.

It is an amenable number.

117282981 is a deficient number, since it is larger than the sum of its proper divisors (39153019).

117282981 is a wasteful number, since it uses less digits than its factorization.

117282981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14675.

The product of its digits is 16128, while the sum is 39.

The square root of 117282981 is about 10829.7267278542. The cubic root of 117282981 is about 489.4913241253.

The spelling of 117282981 in words is "one hundred seventeen million, two hundred eighty-two thousand, nine hundred eighty-one".