28452266 has 4 divisors (see below), whose sum is σ = 42678402. Its totient is φ = 14226132.

The previous prime is 28452257. The next prime is 28452269. The reversal of 28452266 is 66225482.

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., 25959025 + 2493241 = 5095^2 + 1579^2 .

It is not an unprimeable number, because it can be changed into a prime (28452269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7113065 + ... + 7113068.

Almost surely, 2^28452266 is an apocalyptic number.

28452266 is a deficient number, since it is larger than the sum of its proper divisors (14226136).

28452266 is a wasteful number, since it uses less digits than its factorization.

28452266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14226135.

The product of its digits is 46080, while the sum is 35.

The square root of 28452266 is about 5334.0665537655. The cubic root of 28452266 is about 305.2851083023.

The spelling of 28452266 in words is "twenty-eight million, four hundred fifty-two thousand, two hundred sixty-six".