28147895760 has 80 divisors (see below), whose sum is σ = 87522344640. Its totient is φ = 7483407360.

The previous prime is 28147895717. The next prime is 28147895767. The reversal of 28147895760 is 6759874182.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 28147895760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28147895767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97725 + ... + 256604.

It is an arithmetic number, because the mean of its divisors is an integer number (1094029308).

Almost surely, 2^28147895760 is an apocalyptic number.

28147895760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28147895760 is an abundant number, since it is smaller than the sum of its proper divisors (59374448880).

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

28147895760 is a wasteful number, since it uses less digits than its factorization.

28147895760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354676 (or 354670 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 28147895760 in words is "twenty-eight billion, one hundred forty-seven million, eight hundred ninety-five thousand, seven hundred sixty".