28094444 has 24 divisors (see below), whose sum is σ = 57338400. Its totient is φ = 12039888.

The previous prime is 28094419. The next prime is 28094447. The reversal of 28094444 is 44449082.

It is not an unprimeable number, because it can be changed into a prime (28094447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8867 + ... + 11610.

It is an arithmetic number, because the mean of its divisors is an integer number (2389100).

Almost surely, 2^28094444 is an apocalyptic number.

It is an amenable number.

28094444 is an abundant number, since it is smaller than the sum of its proper divisors (29243956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28094444 is a wasteful number, since it uses less digits than its factorization.

28094444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20502 (or 20486 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 28094444 is about 5300.4192287026. The cubic root of 28094444 is about 303.9999278624. Note that the first 4 decimals are identical.

The spelling of 28094444 in words is "twenty-eight million, ninety-four thousand, four hundred forty-four".