28522146 has 16 divisors (see below), whose sum is σ = 57302784. Its totient is φ = 9464304.

The previous prime is 28522111. The next prime is 28522157. The reversal of 28522146 is 64122582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9321 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (3581424).

Almost surely, 2^28522146 is an apocalyptic number.

28522146 is an abundant number, since it is smaller than the sum of its proper divisors (28780638).

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

28522146 is a wasteful number, since it uses less digits than its factorization.

28522146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21545.

The product of its digits is 7680, while the sum is 30.

The square root of 28522146 is about 5340.6128861770. The cubic root of 28522146 is about 305.5348351251.

The spelling of 28522146 in words is "twenty-eight million, five hundred twenty-two thousand, one hundred forty-six".