118231440 has 40 divisors (see below), whose sum is σ = 366518208. Its totient is φ = 31528320.

The previous prime is 118231439. The next prime is 118231441. The reversal of 118231440 is 44132811.

It is an interprime number because it is at equal distance from previous prime (118231439) and next prime (118231441).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 118231440.

It is not an unprimeable number, because it can be changed into a prime (118231441) 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, 246076 + ... + 246555.

Almost surely, 2^118231440 is an apocalyptic number.

118231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118231440 is an abundant number, since it is smaller than the sum of its proper divisors (248286768).

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

118231440 is a wasteful number, since it uses less digits than its factorization.

118231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492647 (or 492641 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 118231440 is about 10873.4281622679. The cubic root of 118231440 is about 490.8072768028.

The spelling of 118231440 in words is "one hundred eighteen million, two hundred thirty-one thousand, four hundred forty".