682128522 has 48 divisors (see below), whose sum is σ = 1553254560. Its totient is φ = 216076896.

The previous prime is 682128511. The next prime is 682128523. The reversal of 682128522 is 225821286.

682128522 is a `hidden beast` number, since 6 + 8 + 2 + 128 + 522 = 666.

It is not an unprimeable number, because it can be changed into a prime (682128523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16729 + ... + 40547.

It is an arithmetic number, because the mean of its divisors is an integer number (32359470).

Almost surely, 2^682128522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 682128522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776627280).

682128522 is an abundant number, since it is smaller than the sum of its proper divisors (871126038).

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

682128522 is a wasteful number, since it uses less digits than its factorization.

682128522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23907 (or 23904 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 682128522 is about 26117.5902793500. The cubic root of 682128522 is about 880.2825031354.

The spelling of 682128522 in words is "six hundred eighty-two million, one hundred twenty-eight thousand, five hundred twenty-two".