28233665385744 has 320 divisors, whose sum is σ = 91825916542976. Its totient is φ = 7277337188352.

The previous prime is 28233665385733. The next prime is 28233665385767. The reversal of 28233665385744 is 44758356633282.

It is a super-2 number, since 2×28233665385744² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36787494 + ... + 37547130.

Almost surely, 2^{28233665385744} is an apocalyptic number.

28233665385744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28233665385744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45912958271488).

28233665385744 is an abundant number, since it is smaller than the sum of its proper divisors (63592251157232).

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

28233665385744 is a wasteful number, since it uses less digits than its factorization.

28233665385744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759862 (or 759856 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 66.

The spelling of 28233665385744 in words is "twenty-eight trillion, two hundred thirty-three billion, six hundred sixty-five million, three hundred eighty-five thousand, seven hundred forty-four".