28844474 has 4 divisors (see below), whose sum is σ = 43266714. Its totient is φ = 14422236.

The previous prime is 28844467. The next prime is 28844483. The reversal of 28844474 is 47444882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 9878449 = 4355^2 + 3143^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7211117 + ... + 7211120.

Almost surely, 2^28844474 is an apocalyptic number.

28844474 is a deficient number, since it is larger than the sum of its proper divisors (14422240).

28844474 is a wasteful number, since it uses less digits than its factorization.

28844474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14422239.

The product of its digits is 229376, while the sum is 41.

The square root of 28844474 is about 5370.7051678527. The cubic root of 28844474 is about 306.6814735027.

The spelling of 28844474 in words is "twenty-eight million, eight hundred forty-four thousand, four hundred seventy-four".