28334530680 has 32 divisors (see below), whose sum is σ = 85003592400. Its totient is φ = 7555874816.

The previous prime is 28334530669. The next prime is 28334530739. The reversal of 28334530680 is 8603543382.

It is a happy number.

It is a super-2 number, since 2×28334530680² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 118060425 + ... + 118060664.

Almost surely, 2^28334530680 is an apocalyptic number.

28334530680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28334530680 is an abundant number, since it is smaller than the sum of its proper divisors (56669061720).

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

28334530680 is a wasteful number, since it uses less digits than its factorization.

28334530680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236121103 (or 236121099 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 28334530680 in words is "twenty-eight billion, three hundred thirty-four million, five hundred thirty thousand, six hundred eighty".