20704319 has 8 divisors (see below), whose sum is σ = 21838080. Its totient is φ = 19575000.

The previous prime is 20704309. The next prime is 20704379. The reversal of 20704319 is 91340702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20704319 - 2¹² = 20700223 is a prime.

It is a super-2 number, since 2×20704319² = 857337650507522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13544 + ... + 14994.

It is an arithmetic number, because the mean of its divisors is an integer number (2729760).

Almost surely, 2^20704319 is an apocalyptic number.

20704319 is a deficient number, since it is larger than the sum of its proper divisors (1133761).

20704319 is a wasteful number, since it uses less digits than its factorization.

20704319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

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

The square root of 20704319 is about 4550.1998857193. The cubic root of 20704319 is about 274.5914329627.

The spelling of 20704319 in words is "twenty million, seven hundred four thousand, three hundred nineteen".