28011922 has 16 divisors (see below), whose sum is σ = 42561792. Its totient is φ = 13826160.

The previous prime is 28011917. The next prime is 28011943. The reversal of 28011922 is 22911082.

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, 80553 + ... + 80899.

It is an arithmetic number, because the mean of its divisors is an integer number (2660112).

Almost surely, 2^28011922 is an apocalyptic number.

28011922 is a deficient number, since it is larger than the sum of its proper divisors (14549870).

28011922 is a wasteful number, since it uses less digits than its factorization.

28011922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 28011922 is about 5292.6290253521. The cubic root of 28011922 is about 303.7019889457.

The spelling of 28011922 in words is "twenty-eight million, eleven thousand, nine hundred twenty-two".