28444574 has 8 divisors (see below), whose sum is σ = 42689808. Its totient is φ = 14214640.

The previous prime is 28444573. The next prime is 28444589. The reversal of 28444574 is 47544482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444573) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4154 + ... + 8610.

It is an arithmetic number, because the mean of its divisors is an integer number (5336226).

Almost surely, 2^28444574 is an apocalyptic number.

28444574 is a deficient number, since it is larger than the sum of its proper divisors (14245234).

28444574 is a wasteful number, since it uses less digits than its factorization.

28444574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650.

The product of its digits is 143360, while the sum is 38.

The square root of 28444574 is about 5333.3454791528. The cubic root of 28444574 is about 305.2575947971.

The spelling of 28444574 in words is "twenty-eight million, four hundred forty-four thousand, five hundred seventy-four".