521742676 has 48 divisors (see below), whose sum is σ = 1147700736. Its totient is φ = 202005504.

The previous prime is 521742673. The next prime is 521742677. The reversal of 521742676 is 676247125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521742673) 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, 1860 + ... + 32356.

It is an arithmetic number, because the mean of its divisors is an integer number (23910432).

Almost surely, 2^521742676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521742676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573850368).

521742676 is an abundant number, since it is smaller than the sum of its proper divisors (625958060).

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

521742676 is a wasteful number, since it uses less digits than its factorization.

521742676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30568 (or 30566 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 521742676 is about 22841.6872406572. The cubic root of 521742676 is about 805.0424606283.

The spelling of 521742676 in words is "five hundred twenty-one million, seven hundred forty-two thousand, six hundred seventy-six".