20464319 has 8 divisors (see below), whose sum is σ = 21399552. Its totient is φ = 19532920.

The previous prime is 20464291. The next prime is 20464321. The reversal of 20464319 is 91346402.

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 20464319 - 2⁸ = 20464063 is a prime.

It is a super-2 number, since 2×20464319² = 837576704267522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20464291 and 20464300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466319) by changing a digit.

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, 19334 + ... + 20364.

It is an arithmetic number, because the mean of its divisors is an integer number (2674944).

Almost surely, 2^20464319 is an apocalyptic number.

20464319 is a deficient number, since it is larger than the sum of its proper divisors (935233).

20464319 is a wasteful number, since it uses less digits than its factorization.

20464319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20464319 is about 4523.7505457308. The cubic root of 20464319 is about 273.5263051679.

The spelling of 20464319 in words is "twenty million, four hundred sixty-four thousand, three hundred nineteen".