921344 has 36 divisors (see below), whose sum is σ = 1900920. Its totient is φ = 445440.

The previous prime is 921331. The next prime is 921353. The reversal of 921344 is 443129.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

921344 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 15074 + ... + 15134.

2⁹²¹³⁴⁴ 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 921344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950460).

921344 is an abundant number, since it is smaller than the sum of its proper divisors (979576).

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

921344 is an equidigital number, since it uses as much as digits as its factorization.

921344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 122 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 921344 is about 959.8666574061. The cubic root of 921344 is about 97.3062204251.

The spelling of 921344 in words is "nine hundred twenty-one thousand, three hundred forty-four".