28744474 has 16 divisors (see below), whose sum is σ = 47740896. Its totient is φ = 12870000.

The previous prime is 28744459. The next prime is 28744487. The reversal of 28744474 is 47444782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8277 + ... + 11224.

It is an arithmetic number, because the mean of its divisors is an integer number (2983806).

Almost surely, 2^28744474 is an apocalyptic number.

28744474 is a deficient number, since it is larger than the sum of its proper divisors (18996422).

28744474 is a wasteful number, since it uses less digits than its factorization.

28744474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19581.

The product of its digits is 200704, while the sum is 40.

The square root of 28744474 is about 5361.3873204610. The cubic root of 28744474 is about 306.3266550306.

The spelling of 28744474 in words is "twenty-eight million, seven hundred forty-four thousand, four hundred seventy-four".