28446874 has 4 divisors (see below), whose sum is σ = 42670314. Its totient is φ = 14223436.

The previous prime is 28446833. The next prime is 28446893. The reversal of 28446874 is 47864482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47864482 = 2 ⋅23932241.

It can be written as a sum of positive squares in only one way, i.e., 27112849 + 1334025 = 5207^2 + 1155^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28446874.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7111717 + ... + 7111720.

Almost surely, 2^28446874 is an apocalyptic number.

28446874 is a deficient number, since it is larger than the sum of its proper divisors (14223440).

28446874 is a wasteful number, since it uses less digits than its factorization.

28446874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14223439.

The product of its digits is 344064, while the sum is 43.

The square root of 28446874 is about 5333.5610993032. The cubic root of 28446874 is about 305.2658221840.

The spelling of 28446874 in words is "twenty-eight million, four hundred forty-six thousand, eight hundred seventy-four".