118992390 has 64 divisors (see below), whose sum is σ = 314399232. Its totient is φ = 28582400.

The previous prime is 118992371. The next prime is 118992397. The reversal of 118992390 is 93299811.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118992397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35695 + ... + 38885.

It is an arithmetic number, because the mean of its divisors is an integer number (4912488).

Almost surely, 2^118992390 is an apocalyptic number.

118992390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 118992390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157199616).

118992390 is an abundant number, since it is smaller than the sum of its proper divisors (195406842).

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

118992390 is a wasteful number, since it uses less digits than its factorization.

118992390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 118992390 is about 10908.3633052810. The cubic root of 118992390 is about 491.8579882950.

The spelling of 118992390 in words is "one hundred eighteen million, nine hundred ninety-two thousand, three hundred ninety".