28844042 has 4 divisors (see below), whose sum is σ = 43266066. Its totient is φ = 14422020.

The previous prime is 28844027. The next prime is 28844051. The reversal of 28844042 is 24044882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24044882 = 2 ⋅12022441.

It can be written as a sum of positive squares in only one way, i.e., 17547721 + 11296321 = 4189^2 + 3361^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7211009 + ... + 7211012.

Almost surely, 2^28844042 is an apocalyptic number.

28844042 is a deficient number, since it is larger than the sum of its proper divisors (14422024).

28844042 is a wasteful number, since it uses less digits than its factorization.

28844042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14422023.

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 28844042 is about 5370.6649495198. The cubic root of 28844042 is about 306.6799424520.

The spelling of 28844042 in words is "twenty-eight million, eight hundred forty-four thousand, forty-two".