28795085664 has 24 divisors (see below), whose sum is σ = 75587100120. Its totient is φ = 9598361856.

The previous prime is 28795085663. The next prime is 28795085729. The reversal of 28795085664 is 46658059782.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 28795085598 and 28795085607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28795085663) 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, 149974309 + ... + 149974500.

It is an arithmetic number, because the mean of its divisors is an integer number (3149462505).

Almost surely, 2^28795085664 is an apocalyptic number.

28795085664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28795085664 is an abundant number, since it is smaller than the sum of its proper divisors (46792014456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28795085664 is a wasteful number, since it uses less digits than its factorization.

28795085664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299948822 (or 299948814 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 28795085664 in words is "twenty-eight billion, seven hundred ninety-five million, eighty-five thousand, six hundred sixty-four".