28222569045 has 128 divisors (see below), whose sum is σ = 56314368000. Its totient is φ = 13292294400.

The previous prime is 28222569007. The next prime is 28222569047. The reversal of 28222569045 is 54096522282.

It is a happy number.

28222569045 is a `hidden beast` number, since 2 + 82 + 2 + 2 + 569 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 28222569045 - 2⁷ = 28222568917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222569047) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12706035 + ... + 12708255.

It is an arithmetic number, because the mean of its divisors is an integer number (439956000).

Almost surely, 2^28222569045 is an apocalyptic number.

It is an amenable number.

28222569045 is a deficient number, since it is larger than the sum of its proper divisors (28091798955).

28222569045 is a wasteful number, since it uses less digits than its factorization.

28222569045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 28222569045 in words is "twenty-eight billion, two hundred twenty-two million, five hundred sixty-nine thousand, forty-five".