28184412440 has 32 divisors (see below), whose sum is σ = 63423540000. Its totient is φ = 11272233984.

The previous prime is 28184412397. The next prime is 28184412499. The reversal of 28184412440 is 4421448182.

It is a super-2 number, since 2×28184412440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28184412394 and 28184412403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277736 + ... + 365384.

It is an arithmetic number, because the mean of its divisors is an integer number (1981985625).

Almost surely, 2^28184412440 is an apocalyptic number.

28184412440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28184412440 is an abundant number, since it is smaller than the sum of its proper divisors (35239127560).

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

28184412440 is a wasteful number, since it uses less digits than its factorization.

28184412440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95699 (or 95695 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The spelling of 28184412440 in words is "twenty-eight billion, one hundred eighty-four million, four hundred twelve thousand, four hundred forty".