20319722 has 16 divisors (see below), whose sum is σ = 30909600. Its totient is φ = 10017840.

The previous prime is 20319713. The next prime is 20319751. The reversal of 20319722 is 22791302.

It is a super-2 number, since 2×20319722² = 825782204314568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20319691 and 20319700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75404 + ... + 75672.

It is an arithmetic number, because the mean of its divisors is an integer number (1931850).

Almost surely, 2^20319722 is an apocalyptic number.

20319722 is a deficient number, since it is larger than the sum of its proper divisors (10589878).

20319722 is a wasteful number, since it uses less digits than its factorization.

20319722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20319722 is about 4507.7402320897. The cubic root of 20319722 is about 272.8805535056.

The spelling of 20319722 in words is "twenty million, three hundred nineteen thousand, seven hundred twenty-two".