28279061064 has 64 divisors (see below), whose sum is σ = 79362830400. Its totient is φ = 9329167872.

The previous prime is 28279061047. The next prime is 28279061081. The reversal of 28279061064 is 46016097282.

It is a happy number.

28279061064 is a `hidden beast` number, since 2 + 8 + 27 + 9 + 0 + 610 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (28279061047) and next prime (28279061081).

It is a super-2 number, since 2×28279061064² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653902 + ... + 695805.

It is an arithmetic number, because the mean of its divisors is an integer number (1240044225).

Almost surely, 2^28279061064 is an apocalyptic number.

28279061064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28279061064 is an abundant number, since it is smaller than the sum of its proper divisors (51083769336).

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

28279061064 is a wasteful number, since it uses less digits than its factorization.

28279061064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349819 (or 1349809 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 28279061064 in words is "twenty-eight billion, two hundred seventy-nine million, sixty-one thousand, sixty-four".