28466397623 has 4 divisors (see below), whose sum is σ = 28630943448. Its totient is φ = 28301851800.

The previous prime is 28466397587. The next prime is 28466397629. The reversal of 28466397623 is 32679366482.

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

It is a cyclic number.

It is not a de Polignac number, because 28466397623 - 2¹⁰ = 28466396599 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 (28466397629) 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, 82272653 + ... + 82272998.

It is an arithmetic number, because the mean of its divisors is an integer number (7157735862).

Almost surely, 2^28466397623 is an apocalyptic number.

28466397623 is a deficient number, since it is larger than the sum of its proper divisors (164545825).

28466397623 is a wasteful number, since it uses less digits than its factorization.

28466397623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164545824.

The product of its digits is 15676416, while the sum is 56.

The spelling of 28466397623 in words is "twenty-eight billion, four hundred sixty-six million, three hundred ninety-seven thousand, six hundred twenty-three".