28227570 has 32 divisors (see below), whose sum is σ = 77424768. Its totient is φ = 6451968.

The previous prime is 28227523. The next prime is 28227649. The reversal of 28227570 is 7572282.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 66999 + ... + 67418.

It is an arithmetic number, because the mean of its divisors is an integer number (2419524).

Almost surely, 2^28227570 is an apocalyptic number.

28227570 is an abundant number, since it is smaller than the sum of its proper divisors (49197198).

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

28227570 is a wasteful number, since it uses less digits than its factorization.

28227570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134434.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 28227570 is about 5312.9624504602. The cubic root of 28227570 is about 304.4793410290.

The spelling of 28227570 in words is "twenty-eight million, two hundred twenty-seven thousand, five hundred seventy".