28492427609 has 4 divisors (see below), whose sum is σ = 28492775604. Its totient is φ = 28492079616.

The previous prime is 28492427603. The next prime is 28492427627. The reversal of 28492427609 is 90672429482.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 24297015625 + 4195411984 = 155875^2 + 64772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28492427609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28492427603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23669 + ... + 239885.

It is an arithmetic number, because the mean of its divisors is an integer number (7123193901).

Almost surely, 2^28492427609 is an apocalyptic number.

It is an amenable number.

28492427609 is a deficient number, since it is larger than the sum of its proper divisors (347995).

28492427609 is a wasteful number, since it uses less digits than its factorization.

28492427609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347994.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 28492427609 in words is "twenty-eight billion, four hundred ninety-two million, four hundred twenty-seven thousand, six hundred nine".