28408844 has 12 divisors (see below), whose sum is σ = 49782600. Its totient is φ = 14185248.

The previous prime is 28408801. The next prime is 28408847. The reversal of 28408844 is 44880482.

It is a junction number, because it is equal to n+sod(n) for n = 28408798 and 28408807.

It is not an unprimeable number, because it can be changed into a prime (28408847) 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, 1154 + ... + 7625.

It is an arithmetic number, because the mean of its divisors is an integer number (4148550).

Almost surely, 2^28408844 is an apocalyptic number.

It is an amenable number.

28408844 is a deficient number, since it is larger than the sum of its proper divisors (21373756).

28408844 is a wasteful number, since it uses less digits than its factorization.

28408844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592 (or 9590 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The square root of 28408844 is about 5329.9947467141. The cubic root of 28408844 is about 305.1297271313.

The spelling of 28408844 in words is "twenty-eight million, four hundred eight thousand, eight hundred forty-four".