28914244 has 24 divisors (see below), whose sum is σ = 51816128. Its totient is φ = 14113440.

The previous prime is 28914241. The next prime is 28914269. The reversal of 28914244 is 44241982.

It is not an unprimeable number, because it can be changed into a prime (28914241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39409 + ... + 40135.

Almost surely, 2^28914244 is an apocalyptic number.

It is an amenable number.

28914244 is a deficient number, since it is larger than the sum of its proper divisors (22901884).

28914244 is a wasteful number, since it uses less digits than its factorization.

28914244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 953 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 28914244 is about 5377.1966674095. The cubic root of 28914244 is about 306.9285449462.

Subtracting from 28914244 its sum of digits (34), we obtain a triangular number (28914210 = T₇₆₀₄).

The spelling of 28914244 in words is "twenty-eight million, nine hundred fourteen thousand, two hundred forty-four".