1921372 has 6 divisors (see below), whose sum is σ = 3362408. Its totient is φ = 960684.

The previous prime is 1921363. The next prime is 1921393. The reversal of 1921372 is 2731291.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 240168 + ... + 240175.

2^1921372 is an apocalyptic number.

It is an amenable number.

1921372 is a deficient number, since it is larger than the sum of its proper divisors (1441036).

1921372 is a wasteful number, since it uses less digits than its factorization.

1921372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480347 (or 480345 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 1921372 is about 1386.1356354989. The cubic root of 1921372 is about 124.3188982100.

The spelling of 1921372 in words is "one million, nine hundred twenty-one thousand, three hundred seventy-two".