28556274 has 16 divisors (see below), whose sum is σ = 57172608. Its totient is φ = 9508752.

The previous prime is 28556261. The next prime is 28556279. The reversal of 28556274 is 47265582.

It is not an unprimeable number, because it can be changed into a prime (28556279) 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, 5799 + ... + 9525.

It is an arithmetic number, because the mean of its divisors is an integer number (3573288).

Almost surely, 2^28556274 is an apocalyptic number.

28556274 is an abundant number, since it is smaller than the sum of its proper divisors (28616334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28556274 is a wasteful number, since it uses less digits than its factorization.

28556274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009.

The product of its digits is 134400, while the sum is 39.

The square root of 28556274 is about 5343.8070698707. The cubic root of 28556274 is about 305.6566485014.

The spelling of 28556274 in words is "twenty-eight million, five hundred fifty-six thousand, two hundred seventy-four".