28234518481386 has 256 divisors, whose sum is σ = 76063092019200. Its totient is φ = 7583690188800.

The previous prime is 28234518481333. The next prime is 28234518481397. The reversal of 28234518481386 is 68318481543282.

28234518481386 is a `hidden beast` number, since 2 + 8 + 2 + 3 + 4 + 518 + 4 + 81 + 38 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 489805126 + ... + 489862766.

It is an arithmetic number, because the mean of its divisors is an integer number (297121453200).

Almost surely, 2^{28234518481386} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28234518481386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38031546009600).

28234518481386 is an abundant number, since it is smaller than the sum of its proper divisors (47828573537814).

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

28234518481386 is a wasteful number, since it uses less digits than its factorization.

28234518481386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58202 (or 58196 counting only the distinct ones).

The product of its digits is 70778880, while the sum is 63.

The spelling of 28234518481386 in words is "twenty-eight trillion, two hundred thirty-four billion, five hundred eighteen million, four hundred eighty-one thousand, three hundred eighty-six".