1921332 has 48 divisors (see below), whose sum is σ = 5201280. Its totient is φ = 540672.

The previous prime is 1921327. The next prime is 1921363. The reversal of 1921332 is 2331291.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1921299 and 1921308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7348 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (108360).

2^1921332 is an apocalyptic number.

1921332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1921332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600640).

1921332 is an abundant number, since it is smaller than the sum of its proper divisors (3279948).

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

1921332 is a wasteful number, since it uses less digits than its factorization.

1921332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 358 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

The square root of 1921332 is about 1386.1212068214. The cubic root of 1921332 is about 124.3180354948.

The spelling of 1921332 in words is "one million, nine hundred twenty-one thousand, three hundred thirty-two".