28799944 has 16 divisors (see below), whose sum is σ = 54241200. Its totient is φ = 14335632.

The previous prime is 28799941. The next prime is 28799951. The reversal of 28799944 is 44999782.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28799891 and 28799900.

It is not an unprimeable number, because it can be changed into a prime (28799941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6114 + ... + 9745.

It is an arithmetic number, because the mean of its divisors is an integer number (3390075).

Almost surely, 2^28799944 is an apocalyptic number.

It is an amenable number.

28799944 is a deficient number, since it is larger than the sum of its proper divisors (25441256).

28799944 is a wasteful number, since it uses less digits than its factorization.

28799944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092 (or 16088 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 28799944 is about 5366.5579285050. The cubic root of 28799944 is about 306.5235742845.

The spelling of 28799944 in words is "twenty-eight million, seven hundred ninety-nine thousand, nine hundred forty-four".