28526378232 has 192 divisors, whose sum is σ = 83521872000. Its totient is φ = 8089424640.

The previous prime is 28526378227. The next prime is 28526378249. The reversal of 28526378232 is 23287362582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4576494 + ... + 4582722.

It is an arithmetic number, because the mean of its divisors is an integer number (435009750).

Almost surely, 2^28526378232 is an apocalyptic number.

28526378232 is a gapful number since it is divisible by the number (22) 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 28526378232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41760936000).

28526378232 is an abundant number, since it is smaller than the sum of its proper divisors (54995493768).

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

28526378232 is a wasteful number, since it uses less digits than its factorization.

28526378232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6362 (or 6347 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The spelling of 28526378232 in words is "twenty-eight billion, five hundred twenty-six million, three hundred seventy-eight thousand, two hundred thirty-two".