118621440 has 216 divisors, whose sum is σ = 469367808. Its totient is φ = 27095040.

The previous prime is 118621439. The next prime is 118621441. The reversal of 118621440 is 44126811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118621439) and next prime (118621441).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118621441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79905 + ... + 81375.

Almost surely, 2^118621440 is an apocalyptic number.

118621440 is a gapful number since it is divisible by the number (10) 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 118621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234683904).

118621440 is an abundant number, since it is smaller than the sum of its proper divisors (350746368).

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

118621440 is a wasteful number, since it uses less digits than its factorization.

118621440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 118621440 is about 10891.3470241288. The cubic root of 118621440 is about 491.3463459225.

The spelling of 118621440 in words is "one hundred eighteen million, six hundred twenty-one thousand, four hundred forty".