28922794 has 16 divisors (see below), whose sum is σ = 44593416. Its totient is φ = 14060800.

The previous prime is 28922779. The next prime is 28922821. The reversal of 28922794 is 49722982.

It can be written as a sum of positive squares in 4 ways, for example, as 23882769 + 5040025 = 4887^2 + 2245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28922794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42384 + ... + 43060.

Almost surely, 2^28922794 is an apocalyptic number.

28922794 is a deficient number, since it is larger than the sum of its proper divisors (15670622).

28922794 is a wasteful number, since it uses less digits than its factorization.

28922794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241.

The product of its digits is 145152, while the sum is 43.

The square root of 28922794 is about 5377.9916325707. The cubic root of 28922794 is about 306.9587950937.

The spelling of 28922794 in words is "twenty-eight million, nine hundred twenty-two thousand, seven hundred ninety-four".