821152 has 24 divisors (see below), whose sum is σ = 1645056. Its totient is φ = 403392.

The previous prime is 821147. The next prime is 821153. The reversal of 821152 is 251128.

It is not an unprimeable number, because it can be changed into a prime (821153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (68544).

2⁸²¹¹⁵² is an apocalyptic number.

It is an amenable number.

821152 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

821152 is a wasteful number, since it uses less digits than its factorization.

821152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 452 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 821152 is about 906.1743761551. The cubic root of 821152 is about 93.6428274558.

The spelling of 821152 in words is "eight hundred twenty-one thousand, one hundred fifty-two".