220372538 has 4 divisors (see below), whose sum is σ = 330558810. Its totient is φ = 110186268.

The previous prime is 220372511. The next prime is 220372543. The reversal of 220372538 is 835273022.

220372538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 217179169 + 3193369 = 14737^2 + 1787^2 .

It is a super-2 number, since 2×220372538² = 97128111009122888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55093133 + ... + 55093136.

Almost surely, 2^220372538 is an apocalyptic number.

220372538 is a deficient number, since it is larger than the sum of its proper divisors (110186272).

220372538 is a wasteful number, since it uses less digits than its factorization.

220372538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110186271.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 220372538 is about 14844.9499157121. The cubic root of 220372538 is about 604.0216302211.

The spelling of 220372538 in words is "two hundred twenty million, three hundred seventy-two thousand, five hundred thirty-eight".