28545466 has 4 divisors (see below), whose sum is σ = 42818202. Its totient is φ = 14272732.

The previous prime is 28545437. The next prime is 28545469. The reversal of 28545466 is 66454582.

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., 19989841 + 8555625 = 4471^2 + 2925^2 .

It is a super-3 number, since 3×28545466³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28545469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7136365 + ... + 7136368.

Almost surely, 2^28545466 is an apocalyptic number.

28545466 is a deficient number, since it is larger than the sum of its proper divisors (14272736).

28545466 is a wasteful number, since it uses less digits than its factorization.

28545466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14272735.

The product of its digits is 230400, while the sum is 40.

The square root of 28545466 is about 5342.7957101128. The cubic root of 28545466 is about 305.6180819162.

The spelling of 28545466 in words is "twenty-eight million, five hundred forty-five thousand, four hundred sixty-six".