20343465 has 12 divisors (see below), whose sum is σ = 35262084. Its totient is φ = 10849824.

The previous prime is 20343419. The next prime is 20343473. The reversal of 20343465 is 56434302.

It can be written as a sum of positive squares in 2 ways, for example, as 4756761 + 15586704 = 2181^2 + 3948^2 .

It is not a de Polignac number, because 20343465 - 2⁸ = 20343209 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 225994 + ... + 226083.

It is an arithmetic number, because the mean of its divisors is an integer number (2938507).

Almost surely, 2^20343465 is an apocalyptic number.

It is an amenable number.

20343465 is a deficient number, since it is larger than the sum of its proper divisors (14918619).

20343465 is a wasteful number, since it uses less digits than its factorization.

20343465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452088 (or 452085 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 20343465 is about 4510.3730444388. The cubic root of 20343465 is about 272.9867964471.

Adding to 20343465 its reverse (56434302), we get a palindrome (76777767).

The spelling of 20343465 in words is "twenty million, three hundred forty-three thousand, four hundred sixty-five".