1921322 has 8 divisors (see below), whose sum is σ = 3103716.
Its totient is φ = 886752.
The previous prime is 1921319. The next prime is 1921327. The reversal of 1921322 is 2231291.
It can be written as a sum of positive squares in 2 ways, for example, as 1907161 + 14161 = 1381^2 + 119^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 1921294 and 1921303.
It is not an unprimeable number, because it can be changed into a prime (1921327) 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, 36923 + ... + 36974.
21921322 is an apocalyptic number.
1921322 is a deficient number, since it is larger than the sum of its proper divisors (1182394).
1921322 is a wasteful number, since it uses less digits than its factorization.
1921322 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73912.
The product of its digits is 216, while the sum is 20.
The square root of 1921322 is about 1386.1175996285.
The cubic root of 1921322 is about 124.3178198142.
The spelling of 1921322 in words is "one million, nine hundred twenty-one thousand, three hundred twenty-two".