28643182140 has 48 divisors (see below), whose sum is σ = 81167200128. Its totient is φ = 7546154304.

The previous prime is 28643182121. The next prime is 28643182153. The reversal of 28643182140 is 4128134682.

It is a super-3 number, since 3×28643182140³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

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, 2870842 + ... + 2880801.

It is an arithmetic number, because the mean of its divisors is an integer number (1690983336).

Almost surely, 2^28643182140 is an apocalyptic number.

28643182140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28643182140 is an abundant number, since it is smaller than the sum of its proper divisors (52524017988).

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

28643182140 is a wasteful number, since it uses less digits than its factorization.

28643182140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751738 (or 5751736 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 28643182140 in words is "twenty-eight billion, six hundred forty-three million, one hundred eighty-two thousand, one hundred forty".