118580640 has 144 divisors (see below), whose sum is σ = 391311648. Its totient is φ = 30181888.

The previous prime is 118580629. The next prime is 118580669. The reversal of 118580640 is 46085811.

It is a super-2 number, since 2×118580640² = 28122736365619200, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 253687 + ... + 254153.

It is an arithmetic number, because the mean of its divisors is an integer number (2717442).

Almost surely, 2^118580640 is an apocalyptic number.

118580640 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 118580640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195655824).

118580640 is an abundant number, since it is smaller than the sum of its proper divisors (272731008).

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

118580640 is a wasteful number, since it uses less digits than its factorization.

118580640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 118580640 is about 10889.4738164890. The cubic root of 118580640 is about 491.2900063891.

It can be divided in two parts, 1185 and 80640, that multiplied together give a triangular number (95558400 = T₁₃₈₂₄).

The spelling of 118580640 in words is "one hundred eighteen million, five hundred eighty thousand, six hundred forty".