117143646 has 32 divisors (see below), whose sum is σ = 249689088. Its totient is φ = 36553440.

The previous prime is 117143641. The next prime is 117143659. The reversal of 117143646 is 646341711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117143641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2545 + ... + 15516.

It is an arithmetic number, because the mean of its divisors is an integer number (7802784).

Almost surely, 2^117143646 is an apocalyptic number.

117143646 is an abundant number, since it is smaller than the sum of its proper divisors (132545442).

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

117143646 is a wasteful number, since it uses less digits than its factorization.

117143646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18136.

The product of its digits is 12096, while the sum is 33.

The square root of 117143646 is about 10823.2918282748. The cubic root of 117143646 is about 489.2974048259.

The spelling of 117143646 in words is "one hundred seventeen million, one hundred forty-three thousand, six hundred forty-six".