118247640 has 256 divisors, whose sum is σ = 442368000. Its totient is φ = 24675840.

The previous prime is 118247627. The next prime is 118247651. The reversal of 118247640 is 46742811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 494641 + ... + 494879.

It is an arithmetic number, because the mean of its divisors is an integer number (1728000).

Almost surely, 2^118247640 is an apocalyptic number.

118247640 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 118247640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221184000).

118247640 is an abundant number, since it is smaller than the sum of its proper divisors (324120360).

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

118247640 is a wasteful number, since it uses less digits than its factorization.

118247640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 118247640 is about 10874.1730720087. The cubic root of 118247640 is about 490.8296924838.

The spelling of 118247640 in words is "one hundred eighteen million, two hundred forty-seven thousand, six hundred forty".