28857206 has 16 divisors (see below), whose sum is σ = 49691040. Its totient is φ = 12312000.

The previous prime is 28857193. The next prime is 28857239. The reversal of 28857206 is 60275882.

It is a self number, because there is not a number n which added to its sum of digits gives 28857206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295 + ... + 7706.

It is an arithmetic number, because the mean of its divisors is an integer number (3105690).

Almost surely, 2^28857206 is an apocalyptic number.

28857206 is a deficient number, since it is larger than the sum of its proper divisors (20833834).

28857206 is a wasteful number, since it uses less digits than its factorization.

28857206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9239.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 28857206 is about 5371.8903562899. The cubic root of 28857206 is about 306.7265901069.

The spelling of 28857206 in words is "twenty-eight million, eight hundred fifty-seven thousand, two hundred six".