722222938 has 4 divisors (see below), whose sum is σ = 1083334410. Its totient is φ = 361111468.

The previous prime is 722222933. The next prime is 722222957. The reversal of 722222938 is 839222227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 839222227 = 6833 ⋅122819.

It can be written as a sum of positive squares in only one way, i.e., 699972849 + 22250089 = 26457^2 + 4717^2 .

It is a junction number, because it is equal to n+sod(n) for n = 722222897 and 722222906.

It is not an unprimeable number, because it can be changed into a prime (722222933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180555733 + ... + 180555736.

Almost surely, 2^722222938 is an apocalyptic number.

722222938 is a deficient number, since it is larger than the sum of its proper divisors (361111472).

722222938 is a wasteful number, since it uses less digits than its factorization.

722222938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361111471.

The product of its digits is 48384, while the sum is 37.

The square root of 722222938 is about 26874.2058115212. The cubic root of 722222938 is about 897.2023984132.

The spelling of 722222938 in words is "seven hundred twenty-two million, two hundred twenty-two thousand, nine hundred thirty-eight".