28250305577 has 16 divisors (see below), whose sum is σ = 32466696192. Its totient is φ = 24349973760.

The previous prime is 28250305561. The next prime is 28250305583. The reversal of 28250305577 is 77550305282.

It is a cyclic number.

It is not a de Polignac number, because 28250305577 - 2⁴ = 28250305561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28250305537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475199 + ... + 531332.

It is an arithmetic number, because the mean of its divisors is an integer number (2029168512).

Almost surely, 2^28250305577 is an apocalyptic number.

It is an amenable number.

28250305577 is a deficient number, since it is larger than the sum of its proper divisors (4216390615).

28250305577 is a wasteful number, since it uses less digits than its factorization.

28250305577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006688.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 28250305577 in words is "twenty-eight billion, two hundred fifty million, three hundred five thousand, five hundred seventy-seven".