118220840 has 16 divisors (see below), whose sum is σ = 265996980. Its totient is φ = 47288320.

The previous prime is 118220821. The next prime is 118220857. The reversal of 118220840 is 48022811.

It can be written as a sum of positive squares in 2 ways, for example, as 114618436 + 3602404 = 10706^2 + 1898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477721 + ... + 1477800.

Almost surely, 2^118220840 is an apocalyptic number.

118220840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118220840 is an abundant number, since it is smaller than the sum of its proper divisors (147776140).

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

118220840 is a wasteful number, since it uses less digits than its factorization.

118220840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955532 (or 2955528 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 118220840 is about 10872.9407245694. The cubic root of 118220840 is about 490.7926086439.

It can be divided in two parts, 1182 and 20840, that added together give a palindrome (22022).

The spelling of 118220840 in words is "one hundred eighteen million, two hundred twenty thousand, eight hundred forty".