28159432901334 has 48 divisors (see below), whose sum is σ = 69782637649920. Its totient is φ = 8039261709360.

The previous prime is 28159432901333. The next prime is 28159432901387. The reversal of 28159432901334 is 43310923495182.

It is a happy number.

28159432901334 is a `hidden beast` number, since 2 + 8 + 1 + 594 + 3 + 2 + 9 + 0 + 13 + 34 = 666.

It is a super-2 number, since 2×28159432901334² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28159432901333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87206932 + ... + 87529239.

It is an arithmetic number, because the mean of its divisors is an integer number (1453804951040).

Almost surely, 2^{28159432901334} is an apocalyptic number.

28159432901334 is an abundant number, since it is smaller than the sum of its proper divisors (41623204748586).

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

28159432901334 is a wasteful number, since it uses less digits than its factorization.

28159432901334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174737465 (or 174737462 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 28159432901334 in words is "twenty-eight trillion, one hundred fifty-nine billion, four hundred thirty-two million, nine hundred one thousand, three hundred thirty-four".