1921072 has 10 divisors (see below), whose sum is σ = 3722108. Its totient is φ = 960528.

The previous prime is 1921069. The next prime is 1921079. The reversal of 1921072 is 2701291.

It is not an unprimeable number, because it can be changed into a prime (1921079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60018 + ... + 60049.

2^1921072 is an apocalyptic number.

It is an amenable number.

1921072 is a deficient number, since it is larger than the sum of its proper divisors (1801036).

1921072 is a wasteful number, since it uses less digits than its factorization.

1921072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120075 (or 120069 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1921072 is about 1386.0274167562. The cubic root of 1921072 is about 124.3124275542.

The spelling of 1921072 in words is "one million, nine hundred twenty-one thousand, seventy-two".