28316287064 has 16 divisors (see below), whose sum is σ = 57177118320. Its totient is φ = 13069055520.

The previous prime is 28316287061. The next prime is 28316287067. The reversal of 28316287064 is 46078261382.

It is an interprime number because it is at equal distance from previous prime (28316287061) and next prime (28316287067).

It is a super-2 number, since 2×28316287064² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28316287061) 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, 136135892 + ... + 136136099.

It is an arithmetic number, because the mean of its divisors is an integer number (3573569895).

Almost surely, 2^28316287064 is an apocalyptic number.

It is an amenable number.

28316287064 is an abundant number, since it is smaller than the sum of its proper divisors (28860831256).

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

28316287064 is a wasteful number, since it uses less digits than its factorization.

28316287064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272272010 (or 272272006 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 28316287064 in words is "twenty-eight billion, three hundred sixteen million, two hundred eighty-seven thousand, sixty-four".