118857640 has 32 divisors (see below), whose sum is σ = 291742560. Its totient is φ = 43220800.

The previous prime is 118857637. The next prime is 118857667. The reversal of 118857640 is 46758811.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 118857593 and 118857602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134626 + ... + 135505.

It is an arithmetic number, because the mean of its divisors is an integer number (9116955).

Almost surely, 2^118857640 is an apocalyptic number.

118857640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118857640 is an abundant number, since it is smaller than the sum of its proper divisors (172884920).

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

118857640 is a wasteful number, since it uses less digits than its factorization.

118857640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270153 (or 270149 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 118857640 is about 10902.1851020793. The cubic root of 118857640 is about 491.6722540142.

It can be divided in two parts, 118 and 857640, that added together give a palindrome (857758).

The spelling of 118857640 in words is "one hundred eighteen million, eight hundred fifty-seven thousand, six hundred forty".