20343674 has 16 divisors (see below), whose sum is σ = 33997320. Its totient is φ = 9065280.

The previous prime is 20343649. The next prime is 20343677. The reversal of 20343674 is 47634302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9878449 + 10465225 = 3143^2 + 3235^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20343677) 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, 12737 + ... + 14244.

Almost surely, 2^20343674 is an apocalyptic number.

20343674 is a deficient number, since it is larger than the sum of its proper divisors (13653646).

20343674 is a wasteful number, since it uses less digits than its factorization.

20343674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27025.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 20343674 is about 4510.3962131946. The cubic root of 20343674 is about 272.9877312935.

Adding to 20343674 its reverse (47634302), we get a palindrome (67977976).

The spelling of 20343674 in words is "twenty million, three hundred forty-three thousand, six hundred seventy-four".