28064929872 has 40 divisors (see below), whose sum is σ = 82858365376. Its totient is φ = 8018551296.

The previous prime is 28064929861. The next prime is 28064929877. The reversal of 28064929872 is 27892946082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28064929877) 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, 41762953 + ... + 41763624.

Almost surely, 2^28064929872 is an apocalyptic number.

It is an amenable number.

28064929872 is an abundant number, since it is smaller than the sum of its proper divisors (54793435504).

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

28064929872 is a wasteful number, since it uses less digits than its factorization.

28064929872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83526595 (or 83526589 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 28064929872 in words is "twenty-eight billion, sixty-four million, nine hundred twenty-nine thousand, eight hundred seventy-two".