28990330322 has 4 divisors (see below), whose sum is σ = 43485495486. Its totient is φ = 14495165160.

The previous prime is 28990330177. The next prime is 28990330331. The reversal of 28990330322 is 22303309982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22303309982 = 2 ⋅11151654991.

It can be written as a sum of positive squares in only one way, i.e., 25625286241 + 3365044081 = 160079^2 + 58009^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28990330322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7247582579 + ... + 7247582582.

Almost surely, 2^28990330322 is an apocalyptic number.

28990330322 is a deficient number, since it is larger than the sum of its proper divisors (14495165164).

28990330322 is a wasteful number, since it uses less digits than its factorization.

28990330322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14495165163.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 28990330322 in words is "twenty-eight billion, nine hundred ninety million, three hundred thirty thousand, three hundred twenty-two".