28085464213 has 4 divisors (see below), whose sum is σ = 29563646560. Its totient is φ = 26607281868.

The previous prime is 28085464153. The next prime is 28085464273. The reversal of 28085464213 is 31246458082.

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 an interprime number because it is at equal distance from previous prime (28085464153) and next prime (28085464273).

It is a cyclic number.

It is not a de Polignac number, because 28085464213 - 2⁹ = 28085463701 is a prime.

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 28085464213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28085464273) 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, 739091145 + ... + 739091182.

It is an arithmetic number, because the mean of its divisors is an integer number (7390911640).

Almost surely, 2^28085464213 is an apocalyptic number.

It is an amenable number.

28085464213 is a deficient number, since it is larger than the sum of its proper divisors (1478182347).

28085464213 is a wasteful number, since it uses less digits than its factorization.

28085464213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478182346.

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 28085464213 in words is "twenty-eight billion, eighty-five million, four hundred sixty-four thousand, two hundred thirteen".