118401588 has 60 divisors (see below), whose sum is σ = 313945632. Its totient is φ = 38903760.

The previous prime is 118401587. The next prime is 118401589. The reversal of 118401588 is 885104811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118401587) and next prime (118401589).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118401587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20431 + ... + 25577.

Almost surely, 2^118401588 is an apocalyptic number.

118401588 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118401588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156972816).

118401588 is an abundant number, since it is smaller than the sum of its proper divisors (195544044).

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

118401588 is a wasteful number, since it uses less digits than its factorization.

118401588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234 (or 5223 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The square root of 118401588 is about 10881.2493767949. The cubic root of 118401588 is about 491.0426057716.

The spelling of 118401588 in words is "one hundred eighteen million, four hundred one thousand, five hundred eighty-eight".