731628275526 has 80 divisors (see below), whose sum is σ = 1694783170080. Its totient is φ = 235744836480.

The previous prime is 731628275519. The next prime is 731628275527. The reversal of 731628275526 is 625572826137.

731628275526 is a `hidden beast` number, since 7 + 3 + 1 + 6 + 2 + 82 + 7 + 552 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731628275527) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 218695 + ... + 1229261.

It is an arithmetic number, because the mean of its divisors is an integer number (21184789626).

Almost surely, 2^731628275526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731628275526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847391585040).

731628275526 is an abundant number, since it is smaller than the sum of its proper divisors (963154894554).

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

731628275526 is a wasteful number, since it uses less digits than its factorization.

731628275526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010731 (or 1010722 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 731628275526 in words is "seven hundred thirty-one billion, six hundred twenty-eight million, two hundred seventy-five thousand, five hundred twenty-six".