521132628 has 24 divisors (see below), whose sum is σ = 1216357632. Its totient is φ = 173656384.

The previous prime is 521132621. The next prime is 521132669. The reversal of 521132628 is 826231125.

It is a junction number, because it is equal to n+sod(n) for n = 521132595 and 521132604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521132621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56776 + ... + 65312.

It is an arithmetic number, because the mean of its divisors is an integer number (50681568).

Almost surely, 2^521132628 is an apocalyptic number.

It is an amenable number.

521132628 is an abundant number, since it is smaller than the sum of its proper divisors (695225004).

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

521132628 is a wasteful number, since it uses less digits than its factorization.

521132628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13631 (or 13629 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 521132628 is about 22828.3295052441. The cubic root of 521132628 is about 804.7285727661.

The spelling of 521132628 in words is "five hundred twenty-one million, one hundred thirty-two thousand, six hundred twenty-eight".