28857606 has 16 divisors (see below), whose sum is σ = 58411584. Its totient is φ = 9503144.

The previous prime is 28857593. The next prime is 28857607. The reversal of 28857606 is 60675882.

It is a super-2 number, since 2×28857606² = 1665522848102472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28857607) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28476 + ... + 29471.

It is an arithmetic number, because the mean of its divisors is an integer number (3650724).

Almost surely, 2^28857606 is an apocalyptic number.

28857606 is an abundant number, since it is smaller than the sum of its proper divisors (29553978).

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

28857606 is a wasteful number, since it uses less digits than its factorization.

28857606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58035.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 28857606 is about 5371.9275870026. The cubic root of 28857606 is about 306.7280073158.

The spelling of 28857606 in words is "twenty-eight million, eight hundred fifty-seven thousand, six hundred six".