7972222238 has 8 divisors (see below), whose sum is σ = 11960087400. Its totient is φ = 3985526440.

The previous prime is 7972222147. The next prime is 7972222273. The reversal of 7972222238 is 8322222797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275093 + ... + 302688.

It is an arithmetic number, because the mean of its divisors is an integer number (1495010925).

Almost surely, 2^7972222238 is an apocalyptic number.

7972222238 is a deficient number, since it is larger than the sum of its proper divisors (3987865162).

7972222238 is a wasteful number, since it uses less digits than its factorization.

7972222238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584682.

The product of its digits is 338688, while the sum is 44.

The square root of 7972222238 is about 89287.3016615465. The cubic root of 7972222238 is about 1997.6825021391.

The spelling of 7972222238 in words is "seven billion, nine hundred seventy-two million, two hundred twenty-two thousand, two hundred thirty-eight".