28495727864 has 32 divisors (see below), whose sum is σ = 54602328000. Its totient is φ = 13938417792.

The previous prime is 28495727863. The next prime is 28495727917. The reversal of 28495727864 is 46872759482.

It is a junction number, because it is equal to n+sod(n) for n = 28495727797 and 28495727806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495727863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137939 + ... + 275714.

It is an arithmetic number, because the mean of its divisors is an integer number (1706322750).

Almost surely, 2^28495727864 is an apocalyptic number.

It is an amenable number.

28495727864 is a deficient number, since it is larger than the sum of its proper divisors (26106600136).

28495727864 is a wasteful number, since it uses less digits than its factorization.

28495727864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413847 (or 413843 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 62.

The spelling of 28495727864 in words is "twenty-eight billion, four hundred ninety-five million, seven hundred twenty-seven thousand, eight hundred sixty-four".