28397935144458 has 96 divisors (see below), whose sum is σ = 67376359013184. Its totient is φ = 8572888800000.

The previous prime is 28397935144387. The next prime is 28397935144591. The reversal of 28397935144458 is 85444153979382.

28397935144458 is a `hidden beast` number, since 2 + 8 + 3 + 97 + 93 + 5 + 1 + 4 + 445 + 8 = 666.

It is a super-2 number, since 2×28397935144458² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 258717468 + ... + 258827208.

It is an arithmetic number, because the mean of its divisors is an integer number (701837073054).

Almost surely, 2^{28397935144458} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28397935144458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33688179506592).

28397935144458 is an abundant number, since it is smaller than the sum of its proper divisors (38978423868726).

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

28397935144458 is a wasteful number, since it uses less digits than its factorization.

28397935144458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114692 (or 114689 counting only the distinct ones).

The product of its digits is 1045094400, while the sum is 72.

The spelling of 28397935144458 in words is "twenty-eight trillion, three hundred ninety-seven billion, nine hundred thirty-five million, one hundred forty-four thousand, four hundred fifty-eight".