28472344 has 32 divisors (see below), whose sum is σ = 56010240. Its totient is φ = 13543200.

The previous prime is 28472329. The next prime is 28472357. The reversal of 28472344 is 44327482.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 49579 + ... + 50149.

It is an arithmetic number, because the mean of its divisors is an integer number (1750320).

Almost surely, 2^28472344 is an apocalyptic number.

It is an amenable number.

28472344 is a deficient number, since it is larger than the sum of its proper divisors (27537896).

28472344 is a wasteful number, since it uses less digits than its factorization.

28472344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 867 counting only the distinct ones).

The product of its digits is 43008, while the sum is 34.

The square root of 28472344 is about 5335.9482756114. The cubic root of 28472344 is about 305.3569019180.

The spelling of 28472344 in words is "twenty-eight million, four hundred seventy-two thousand, three hundred forty-four".