28673244 has 24 divisors (see below), whose sum is σ = 74338320. Its totient is φ = 9557712.

The previous prime is 28673231. The next prime is 28673251. The reversal of 28673244 is 44237682.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28673199 and 28673208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132639 + ... + 132854.

It is an arithmetic number, because the mean of its divisors is an integer number (3097430).

Almost surely, 2^28673244 is an apocalyptic number.

It is an amenable number.

28673244 is an abundant number, since it is smaller than the sum of its proper divisors (45665076).

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

28673244 is a wasteful number, since it uses less digits than its factorization.

28673244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265506 (or 265498 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 28673244 is about 5354.7403298386. The cubic root of 28673244 is about 306.0734156795.

The spelling of 28673244 in words is "twenty-eight million, six hundred seventy-three thousand, two hundred forty-four".