1921326 has 32 divisors (see below), whose sum is σ = 4295808. Its totient is φ = 567840.

The previous prime is 1921319. The next prime is 1921327. The reversal of 1921326 is 6231291.

It is a junction number, because it is equal to n+sod(n) for n = 1921296 and 1921305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2500 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (134244).

2^1921326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1921326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147904).

1921326 is an abundant number, since it is smaller than the sum of its proper divisors (2374482).

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

1921326 is a wasteful number, since it uses less digits than its factorization.

1921326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its digits is 648, while the sum is 24.

The square root of 1921326 is about 1386.1190425068. The cubic root of 1921326 is about 124.3179060865.

The spelling of 1921326 in words is "one million, nine hundred twenty-one thousand, three hundred twenty-six".