28876909664 has 24 divisors (see below), whose sum is σ = 56857915800. Its totient is φ = 14436804096.

The previous prime is 28876909657. The next prime is 28876909667. The reversal of 28876909664 is 46690967882.

It is a self number, because there is not a number n which added to its sum of digits gives 28876909664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28876909667) 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, 262007 + ... + 355529.

It is an arithmetic number, because the mean of its divisors is an integer number (2369079825).

Almost surely, 2^28876909664 is an apocalyptic number.

It is an amenable number.

28876909664 is a deficient number, since it is larger than the sum of its proper divisors (27981006136).

28876909664 is an equidigital number, since it uses as much as digits as its factorization.

28876909664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103182 (or 103174 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 28876909664 in words is "twenty-eight billion, eight hundred seventy-six million, nine hundred nine thousand, six hundred sixty-four".