28064463320 has 32 divisors (see below), whose sum is σ = 63153846720. Its totient is φ = 11224220160.

The previous prime is 28064463313. The next prime is 28064463331. The reversal of 28064463320 is 2336446082.

It is a super-2 number, since 2×28064463320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266705 + ... + 356735.

It is an arithmetic number, because the mean of its divisors is an integer number (1973557710).

Almost surely, 2^28064463320 is an apocalyptic number.

28064463320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28064463320 is an abundant number, since it is smaller than the sum of its proper divisors (35089383400).

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

28064463320 is a wasteful number, since it uses less digits than its factorization.

28064463320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97835 (or 97831 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 28064463320 in words is "twenty-eight billion, sixty-four million, four hundred sixty-three thousand, three hundred twenty".