821530096 has 20 divisors (see below), whose sum is σ = 1646602200. Its totient is φ = 396600512.

The previous prime is 821530063. The next prime is 821530097. The reversal of 821530096 is 690035128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821530097) 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 3 ways as a sum of consecutive naturals, for example, 884806 + ... + 885733.

It is an arithmetic number, because the mean of its divisors is an integer number (82330110).

Almost surely, 2^821530096 is an apocalyptic number.

It is an amenable number.

821530096 is an abundant number, since it is smaller than the sum of its proper divisors (825072104).

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

821530096 is a wasteful number, since it uses less digits than its factorization.

821530096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770576 (or 1770570 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 821530096 is about 28662.3463100982. The cubic root of 821530096 is about 936.5719773301.

The spelling of 821530096 in words is "eight hundred twenty-one million, five hundred thirty thousand, ninety-six".