28525292 has 6 divisors (see below), whose sum is σ = 49919268. Its totient is φ = 14262644.

The previous prime is 28525283. The next prime is 28525309. The reversal of 28525292 is 29252582.

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 as a sum of consecutive naturals, namely, 3565658 + ... + 3565665.

It is an arithmetic number, because the mean of its divisors is an integer number (8319878).

Almost surely, 2^28525292 is an apocalyptic number.

It is an amenable number.

28525292 is a deficient number, since it is larger than the sum of its proper divisors (21393976).

28525292 is a wasteful number, since it uses less digits than its factorization.

28525292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131327 (or 7131325 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 28525292 is about 5340.9074135394. The cubic root of 28525292 is about 305.5460682356.

The spelling of 28525292 in words is "twenty-eight million, five hundred twenty-five thousand, two hundred ninety-two".