118280420 has 12 divisors (see below), whose sum is σ = 248388924. Its totient is φ = 47312160.

The previous prime is 118280419. The next prime is 118280429. The reversal of 118280420 is 24082811.

It can be written as a sum of positive squares in 2 ways, for example, as 82591744 + 35688676 = 9088^2 + 5974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 118280420.

It is not an unprimeable number, because it can be changed into a prime (118280429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2956991 + ... + 2957030.

It is an arithmetic number, because the mean of its divisors is an integer number (20699077).

Almost surely, 2^118280420 is an apocalyptic number.

118280420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118280420 is an abundant number, since it is smaller than the sum of its proper divisors (130108504).

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

118280420 is a wasteful number, since it uses less digits than its factorization.

118280420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914030 (or 5914028 counting only the distinct ones).

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

The square root of 118280420 is about 10875.6802086122. The cubic root of 118280420 is about 490.8750433842.

The spelling of 118280420 in words is "one hundred eighteen million, two hundred eighty thousand, four hundred twenty".