220315138 has 16 divisors (see below), whose sum is σ = 353382264. Its totient is φ = 102649600.

The previous prime is 220315133. The next prime is 220315153. The reversal of 220315138 is 831513022.

It can be written as a sum of positive squares in 4 ways, for example, as 200307409 + 20007729 = 14153^2 + 4473^2 .

It is not an unprimeable number, because it can be changed into a prime (220315133) 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, 28645 + ... + 35512.

Almost surely, 2^220315138 is an apocalyptic number.

220315138 is a deficient number, since it is larger than the sum of its proper divisors (133067126).

220315138 is a wasteful number, since it uses less digits than its factorization.

220315138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64277.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 220315138 is about 14843.0164724021. The cubic root of 220315138 is about 603.9691828933.

The spelling of 220315138 in words is "two hundred twenty million, three hundred fifteen thousand, one hundred thirty-eight".