28643353460 has 24 divisors (see below), whose sum is σ = 60155110176. Its totient is φ = 11456566560.

The previous prime is 28643353451. The next prime is 28643353469. The reversal of 28643353460 is 6435334682.

It is an interprime number because it is at equal distance from previous prime (28643353451) and next prime (28643353469).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28643353469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324899 + ... + 403541.

It is an arithmetic number, because the mean of its divisors is an integer number (2506462924).

Almost surely, 2^28643353460 is an apocalyptic number.

28643353460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28643353460 is an abundant number, since it is smaller than the sum of its proper divisors (31511756716).

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

28643353460 is a wasteful number, since it uses less digits than its factorization.

28643353460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96863 (or 96861 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 28643353460 in words is "twenty-eight billion, six hundred forty-three million, three hundred fifty-three thousand, four hundred sixty".