2019722 has 16 divisors (see below), whose sum is σ = 3205440. Its totient is φ = 954316.

The previous prime is 2019713. The next prime is 2019739. The reversal of 2019722 is 2279102.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 in 7 ways as a sum of consecutive naturals, for example, 24293 + ... + 24375.

It is an arithmetic number, because the mean of its divisors is an integer number (200340).

2^2019722 is an apocalyptic number.

2019722 is a deficient number, since it is larger than the sum of its proper divisors (1185718).

2019722 is an frugal number, since it uses more digits than its factorization.

2019722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2019722 is about 1421.1692369313. The cubic root of 2019722 is about 126.4048871822.

The spelling of 2019722 in words is "two million, nineteen thousand, seven hundred twenty-two".