28735044 has 24 divisors (see below), whose sum is σ = 72206400. Its totient is φ = 8841504.

The previous prime is 28735039. The next prime is 28735079. The reversal of 28735044 is 44053782.

It is a junction number, because it is equal to n+sod(n) for n = 28734996 and 28735014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91944 + ... + 92255.

It is an arithmetic number, because the mean of its divisors is an integer number (3008600).

Almost surely, 2^28735044 is an apocalyptic number.

It is an amenable number.

28735044 is an abundant number, since it is smaller than the sum of its proper divisors (43471356).

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

28735044 is a wasteful number, since it uses less digits than its factorization.

28735044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184219 (or 184217 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 28735044 is about 5360.5078117656. The cubic root of 28735044 is about 306.2931532138.

Subtracting from 28735044 its product of nonzero digits (26880), we obtain a square (28708164 = 5358²).

The spelling of 28735044 in words is "twenty-eight million, seven hundred thirty-five thousand, forty-four".