921200 has 90 divisors (see below), whose sum is σ = 2629296. Its totient is φ = 309120.

The previous prime is 921199. The next prime is 921203. The reversal of 921200 is 2129.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19577 + ... + 19623.

2⁹²¹²⁰⁰ 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 921200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314648).

921200 is an abundant number, since it is smaller than the sum of its proper divisors (1708096).

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

921200 is a wasteful number, since it uses less digits than its factorization.

921200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 921200 is about 959.7916440561. The cubic root of 921200 is about 97.3011507205.

Adding to 921200 its reverse (2129), we get a palindrome (923329).

The spelling of 921200 in words is "nine hundred twenty-one thousand, two hundred".