28134485383640 has 16 divisors (see below), whose sum is σ = 63302592113280. Its totient is φ = 11253794153440.

The previous prime is 28134485383601. The next prime is 28134485383651. The reversal of 28134485383640 is 4638358443182.

It is a self number, because there is not a number n which added to its sum of digits gives 28134485383640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351681067256 + ... + 351681067335.

It is an arithmetic number, because the mean of its divisors is an integer number (3956412007080).

Almost surely, 2^{28134485383640} is an apocalyptic number.

28134485383640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28134485383640 is an abundant number, since it is smaller than the sum of its proper divisors (35168106729640).

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

28134485383640 is a wasteful number, since it uses less digits than its factorization.

28134485383640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703362134602 (or 703362134598 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 59.

The spelling of 28134485383640 in words is "twenty-eight trillion, one hundred thirty-four billion, four hundred eighty-five million, three hundred eighty-three thousand, six hundred forty".