118220790 has 16 divisors (see below), whose sum is σ = 283729968. Its totient is φ = 31525536.

The previous prime is 118220789. The next prime is 118220797. The reversal of 118220790 is 97022811.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 3940693 = 118220790 / (1 + 1 + 8 + 2 + 2 + 0 + 7 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118220797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970317 + ... + 1970376.

It is an arithmetic number, because the mean of its divisors is an integer number (17733123).

Almost surely, 2^118220790 is an apocalyptic number.

118220790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

118220790 is an abundant number, since it is smaller than the sum of its proper divisors (165509178).

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

118220790 is a wasteful number, since it uses less digits than its factorization.

118220790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940703.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 118220790 is about 10872.9384252832. The cubic root of 118220790 is about 490.7925394524.

The spelling of 118220790 in words is "one hundred eighteen million, two hundred twenty thousand, seven hundred ninety".