28441905 has 32 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 14622720.

The previous prime is 28441873. The next prime is 28441927. The reversal of 28441905 is 50914482.

It is not a de Polignac number, because 28441905 - 2⁵ = 28441873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63121 + ... + 63569.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^28441905 is an apocalyptic number.

It is an amenable number.

28441905 is a deficient number, since it is larger than the sum of its proper divisors (18732495).

28441905 is a wasteful number, since it uses less digits than its factorization.

28441905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28441905 is about 5333.0952551028. The cubic root of 28441905 is about 305.2480468953.

The spelling of 28441905 in words is "twenty-eight million, four hundred forty-one thousand, nine hundred five".