20343349 has 8 divisors (see below), whose sum is σ = 21997080. Its totient is φ = 18702336.

The previous prime is 20343331. The next prime is 20343371. The reversal of 20343349 is 94334302.

It can be written as a sum of positive squares in 4 ways, for example, as 2829124 + 17514225 = 1682^2 + 4185^2 .

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 20343349 - 2¹³ = 20335157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343329) 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, 297 + ... + 6385.

It is an arithmetic number, because the mean of its divisors is an integer number (2749635).

Almost surely, 2^20343349 is an apocalyptic number.

It is an amenable number.

20343349 is a deficient number, since it is larger than the sum of its proper divisors (1653731).

20343349 is a wasteful number, since it uses less digits than its factorization.

20343349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6359.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 20343349 is about 4510.3601851737. The cubic root of 20343349 is about 272.9862775822.

The spelling of 20343349 in words is "twenty million, three hundred forty-three thousand, three hundred forty-nine".