28243466 has 4 divisors (see below), whose sum is σ = 42365202. Its totient is φ = 14121732.

The previous prime is 28243451. The next prime is 28243483. The reversal of 28243466 is 66434282.

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., 27300625 + 942841 = 5225^2 + 971^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7060865 + ... + 7060868.

Almost surely, 2^28243466 is an apocalyptic number.

28243466 is a deficient number, since it is larger than the sum of its proper divisors (14121736).

28243466 is a wasteful number, since it uses less digits than its factorization.

28243466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121735.

The product of its digits is 55296, while the sum is 35.

The square root of 28243466 is about 5314.4582038059. The cubic root of 28243466 is about 304.5364848705.

The spelling of 28243466 in words is "twenty-eight million, two hundred forty-three thousand, four hundred sixty-six".