921152 has 28 divisors (see below), whose sum is σ = 1882140. Its totient is φ = 446976.

The previous prime is 921149. The next prime is 921157. The reversal of 921152 is 251129.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 379456 = 736^2 + 616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174 + ... + 2562.

2⁹²¹¹⁵² 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 921152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (941070).

921152 is an abundant number, since it is smaller than the sum of its proper divisors (960988).

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

921152 is a wasteful number, since it uses less digits than its factorization.

921152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 428 counting only the distinct ones).

The product of its digits is 180, while the sum is 20.

The square root of 921152 is about 959.7666383033. The cubic root of 921152 is about 97.2994607015.

The spelling of 921152 in words is "nine hundred twenty-one thousand, one hundred fifty-two".