28257508286 has 16 divisors (see below), whose sum is σ = 48463910880. Its totient is φ = 12104743680.

The previous prime is 28257508283. The next prime is 28257508289. The reversal of 28257508286 is 68280575282.

It is an interprime number because it is at equal distance from previous prime (28257508283) and next prime (28257508289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28257508283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436751 + ... + 497258.

It is an arithmetic number, because the mean of its divisors is an integer number (3028994430).

Almost surely, 2^28257508286 is an apocalyptic number.

28257508286 is a deficient number, since it is larger than the sum of its proper divisors (20206402594).

28257508286 is a wasteful number, since it uses less digits than its factorization.

28257508286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936179.

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 28257508286 in words is "twenty-eight billion, two hundred fifty-seven million, five hundred eight thousand, two hundred eighty-six".