28044922 has 4 divisors (see below), whose sum is σ = 42067386. Its totient is φ = 14022460.

The previous prime is 28044881. The next prime is 28044941. The reversal of 28044922 is 22944082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16491721 + 11553201 = 4061^2 + 3399^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7011229 + ... + 7011232.

Almost surely, 2^28044922 is an apocalyptic number.

28044922 is a deficient number, since it is larger than the sum of its proper divisors (14022464).

28044922 is a wasteful number, since it uses less digits than its factorization.

28044922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14022463.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28044922 is about 5295.7456509919. The cubic root of 28044922 is about 303.8212028600.

The spelling of 28044922 in words is "twenty-eight million, forty-four thousand, nine hundred twenty-two".