28275574 has 16 divisors (see below), whose sum is σ = 43340976. Its totient is φ = 13831200.

The previous prime is 28275571. The next prime is 28275587. The reversal of 28275574 is 47557282.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28275571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27184 + ... + 28204.

It is an arithmetic number, because the mean of its divisors is an integer number (2708811).

Almost surely, 2^28275574 is an apocalyptic number.

28275574 is a deficient number, since it is larger than the sum of its proper divisors (15065402).

28275574 is a wasteful number, since it uses less digits than its factorization.

28275574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311.

The product of its digits is 156800, while the sum is 40.

The square root of 28275574 is about 5317.4781616853. The cubic root of 28275574 is about 304.6518431681.

The spelling of 28275574 in words is "twenty-eight million, two hundred seventy-five thousand, five hundred seventy-four".