28469244 has 12 divisors (see below), whose sum is σ = 66428264. Its totient is φ = 9489744.

The previous prime is 28469227. The next prime is 28469257. The reversal of 28469244 is 44296482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186207 + ... + 1186230.

Almost surely, 2^28469244 is an apocalyptic number.

It is an amenable number.

28469244 is an abundant number, since it is smaller than the sum of its proper divisors (37959020).

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

28469244 is a wasteful number, since it uses less digits than its factorization.

28469244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372444 (or 2372442 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 28469244 is about 5335.6577851283. The cubic root of 28469244 is about 305.3458193420.

It can be divided in two parts, 2846 and 9244, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 28469244 in words is "twenty-eight million, four hundred sixty-nine thousand, two hundred forty-four".