821795960 has 16 divisors (see below), whose sum is σ = 1849041000. Its totient is φ = 328718368.

The previous prime is 821795927. The next prime is 821795969. The reversal of 821795960 is 69597128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821795969) 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, 10272410 + ... + 10272489.

Almost surely, 2^821795960 is an apocalyptic number.

It is an amenable number.

821795960 is an abundant number, since it is smaller than the sum of its proper divisors (1027245040).

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

821795960 is a wasteful number, since it uses less digits than its factorization.

821795960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20544910 (or 20544906 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 821795960 is about 28666.9837966955. The cubic root of 821795960 is about 936.6729977381.

The spelling of 821795960 in words is "eight hundred twenty-one million, seven hundred ninety-five thousand, nine hundred sixty".