821850260 has 96 divisors (see below), whose sum is σ = 2245404672. Its totient is φ = 245013120.

The previous prime is 821850257. The next prime is 821850307. The reversal of 821850260 is 62058128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23819 + ... + 47021.

It is an arithmetic number, because the mean of its divisors is an integer number (23389632).

Almost surely, 2^821850260 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 821850260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1122702336).

821850260 is an abundant number, since it is smaller than the sum of its proper divisors (1423554412).

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

821850260 is a wasteful number, since it uses less digits than its factorization.

821850260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23253 (or 23251 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 821850260 is about 28667.9308635974. The cubic root of 821850260 is about 936.6936274427.

The spelling of 821850260 in words is "eight hundred twenty-one million, eight hundred fifty thousand, two hundred sixty".