388333828828 has 48 divisors (see below), whose sum is σ = 748987031520. Its totient is φ = 174704947200.

The previous prime is 388333828789. The next prime is 388333828829. The reversal of 388333828828 is 828828333883.

388333828828 is a nontrivial binomial coefficient, being equal to C(881288, 2).

It is a super-2 number, since 2×388333828828² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 388333828828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388333828829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3470068 + ... + 3580228.

It is an arithmetic number, because the mean of its divisors is an integer number (15603896490).

Almost surely, 2^388333828828 is an apocalyptic number.

388333828828 is the 881287-th triangular number and also the 440644-th hexagonal number.

388333828828 is the 293763-rd centered nonagonal number.

It is an amenable number.

388333828828 is a deficient number, since it is larger than the sum of its proper divisors (360653202692).

388333828828 is a wasteful number, since it uses less digits than its factorization.

388333828828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110998 (or 110996 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 64.

The spelling of 388333828828 in words is "three hundred eighty-eight billion, three hundred thirty-three million, eight hundred twenty-eight thousand, eight hundred twenty-eight".