28422865057 has 4 divisors (see below), whose sum is σ = 28425643696. Its totient is φ = 28420086420.

The previous prime is 28422865013. The next prime is 28422865061. The reversal of 28422865057 is 75056822482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28422865057 is a prime.

It is a super-2 number, since 2×28422865057² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28422865057.

It is not an unprimeable number, because it can be changed into a prime (28422865007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373919 + ... + 1394452.

It is an arithmetic number, because the mean of its divisors is an integer number (7106410924).

Almost surely, 2^28422865057 is an apocalyptic number.

It is an amenable number.

28422865057 is a deficient number, since it is larger than the sum of its proper divisors (2778639).

28422865057 is a wasteful number, since it uses less digits than its factorization.

28422865057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778638.

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 28422865057 in words is "twenty-eight billion, four hundred twenty-two million, eight hundred sixty-five thousand, fifty-seven".