28622637322 has 4 divisors (see below), whose sum is σ = 42933955986. Its totient is φ = 14311318660.

The previous prime is 28622637317. The next prime is 28622637361. The reversal of 28622637322 is 22373622682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22373622682 = 2 ⋅11186811341.

It can be written as a sum of positive squares in only one way, i.e., 28009034881 + 613602441 = 167359^2 + 24771^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7155659329 + ... + 7155659332.

Almost surely, 2^28622637322 is an apocalyptic number.

28622637322 is a deficient number, since it is larger than the sum of its proper divisors (14311318664).

28622637322 is a wasteful number, since it uses less digits than its factorization.

28622637322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14311318663.

The product of its digits is 580608, while the sum is 43.

The spelling of 28622637322 in words is "twenty-eight billion, six hundred twenty-two million, six hundred thirty-seven thousand, three hundred twenty-two".