28969837086498 has 128 divisors (see below), whose sum is σ = 74749015572480. Its totient is φ = 7264097280000.

The previous prime is 28969837086497. The next prime is 28969837086511. The reversal of 28969837086498 is 89468073896982.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28969837086497) 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 63 ways as a sum of consecutive naturals, for example, 3384898 + ... + 8330498.

It is an arithmetic number, because the mean of its divisors is an integer number (583976684160).

Almost surely, 2^{28969837086498} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28969837086498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37374507786240).

28969837086498 is an abundant number, since it is smaller than the sum of its proper divisors (45779178485982).

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

28969837086498 is a wasteful number, since it uses less digits than its factorization.

28969837086498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946064.

The product of its (nonzero) digits is 18059231232, while the sum is 87.

The spelling of 28969837086498 in words is "twenty-eight trillion, nine hundred sixty-nine billion, eight hundred thirty-seven million, eighty-six thousand, four hundred ninety-eight".