28274444 has 24 divisors (see below), whose sum is σ = 54335568. Its totient is φ = 12767040.

The previous prime is 28274443. The next prime is 28274447. The reversal of 28274444 is 44447282.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28274443) 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, 4862 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (2263982).

Almost surely, 2^28274444 is an apocalyptic number.

It is an amenable number.

28274444 is a deficient number, since it is larger than the sum of its proper divisors (26061124).

28274444 is a wasteful number, since it uses less digits than its factorization.

28274444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4263 counting only the distinct ones).

The product of its digits is 57344, while the sum is 35.

The square root of 28274444 is about 5317.3719072489. The cubic root of 28274444 is about 304.6477847634.

It can be divided in two parts, 28 and 274444, that added together give a palindrome (274472).

The spelling of 28274444 in words is "twenty-eight million, two hundred seventy-four thousand, four hundred forty-four".