116431638 has 8 divisors (see below), whose sum is σ = 232863288. Its totient is φ = 38810544.

The previous prime is 116431631. The next prime is 116431649. The reversal of 116431638 is 836134611.

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

116431638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 116431599 and 116431608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116431631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9702631 + ... + 9702642.

It is an arithmetic number, because the mean of its divisors is an integer number (29107911).

Almost surely, 2^116431638 is an apocalyptic number.

116431638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

116431638 is a wasteful number, since it uses less digits than its factorization.

116431638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19405278.

The product of its digits is 10368, while the sum is 33.

The square root of 116431638 is about 10790.3492992581. The cubic root of 116431638 is about 488.3040605977.

The spelling of 116431638 in words is "one hundred sixteen million, four hundred thirty-one thousand, six hundred thirty-eight".