28076885653 has 4 divisors (see below), whose sum is σ = 29728467180. Its totient is φ = 26425304128.

The previous prime is 28076885633. The next prime is 28076885689. The reversal of 28076885653 is 35658867082.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15469638129 + 12607247524 = 124377^2 + 112282^2 .

It is a cyclic number.

It is not a de Polignac number, because 28076885653 - 2⁹ = 28076885141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28076885633) 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, 825790738 + ... + 825790771.

It is an arithmetic number, because the mean of its divisors is an integer number (7432116795).

Almost surely, 2^28076885653 is an apocalyptic number.

It is an amenable number.

28076885653 is a deficient number, since it is larger than the sum of its proper divisors (1651581527).

28076885653 is a wasteful number, since it uses less digits than its factorization.

28076885653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651581526.

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 28076885653 in words is "twenty-eight billion, seventy-six million, eight hundred eighty-five thousand, six hundred fifty-three".