28446994 has 16 divisors (see below), whose sum is σ = 44323488. Its totient is φ = 13682592.

The previous prime is 28446991. The next prime is 28447007. The reversal of 28446994 is 49964482.

It is not an unprimeable number, because it can be changed into a prime (28446991) 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, 3294 + ... + 8230.

It is an arithmetic number, because the mean of its divisors is an integer number (2770218).

Almost surely, 2^28446994 is an apocalyptic number.

28446994 is a deficient number, since it is larger than the sum of its proper divisors (15876494).

28446994 is a wasteful number, since it uses less digits than its factorization.

28446994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049.

The product of its digits is 497664, while the sum is 46.

The square root of 28446994 is about 5333.5723488109. The cubic root of 28446994 is about 305.2662514268.

It can be divided in two parts, 284 and 46994, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 28446994 in words is "twenty-eight million, four hundred forty-six thousand, nine hundred ninety-four".