20343719 has 8 divisors (see below), whose sum is σ = 22909440. Its totient is φ = 17897400.

The previous prime is 20343689. The next prime is 20343727. The reversal of 20343719 is 91734302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343719 is a prime.

It is a super-2 number, since 2×20343719² = 827733805501922, 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 = 20343691 and 20343700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29489 + ... + 30170.

It is an arithmetic number, because the mean of its divisors is an integer number (2863680).

Almost surely, 2^20343719 is an apocalyptic number.

20343719 is a deficient number, since it is larger than the sum of its proper divisors (2565721).

20343719 is a wasteful number, since it uses less digits than its factorization.

20343719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59701.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 20343719 is about 4510.4012016671. The cubic root of 20343719 is about 272.9879325754.

The spelling of 20343719 in words is "twenty million, three hundred forty-three thousand, seven hundred nineteen".