28064074 has 4 divisors (see below), whose sum is σ = 42096114. Its totient is φ = 14032036.

The previous prime is 28064063. The next prime is 28064111. The reversal of 28064074 is 47046082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47046082 = 2 ⋅23523041.

It can be written as a sum of positive squares in only one way, i.e., 25150225 + 2913849 = 5015^2 + 1707^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7016017 + ... + 7016020.

Almost surely, 2^28064074 is an apocalyptic number.

28064074 is a deficient number, since it is larger than the sum of its proper divisors (14032040).

28064074 is a wasteful number, since it uses less digits than its factorization.

28064074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14032039.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 28064074 is about 5297.5535863264. The cubic root of 28064074 is about 303.8903473991.

The spelling of 28064074 in words is "twenty-eight million, sixty-four thousand, seventy-four".