220008538 has 4 divisors (see below), whose sum is σ = 330012810. Its totient is φ = 110004268.

The previous prime is 220008533. The next prime is 220008539. The reversal of 220008538 is 835800022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 183683809 + 36324729 = 13553^2 + 6027^2 .

It is not an unprimeable number, because it can be changed into a prime (220008533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55002133 + ... + 55002136.

Almost surely, 2^220008538 is an apocalyptic number.

220008538 is a deficient number, since it is larger than the sum of its proper divisors (110004272).

220008538 is a wasteful number, since it uses less digits than its factorization.

220008538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110004271.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 220008538 is about 14832.6847873202. The cubic root of 220008538 is about 603.6888830166.

The spelling of 220008538 in words is "two hundred twenty million, eight thousand, five hundred thirty-eight".