28057106 has 48 divisors (see below), whose sum is σ = 56585952. Its totient is φ = 10281600.

The previous prime is 28057067. The next prime is 28057151. The reversal of 28057106 is 60175082.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17561 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (1178874).

Almost surely, 2^28057106 is an apocalyptic number.

28057106 is an abundant number, since it is smaller than the sum of its proper divisors (28528846).

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

28057106 is a wasteful number, since it uses less digits than its factorization.

28057106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 28057106 is about 5296.8958834397. The cubic root of 28057106 is about 303.8651944436.

The spelling of 28057106 in words is "twenty-eight million, fifty-seven thousand, one hundred six".