20340676 has 12 divisors (see below), whose sum is σ = 36558508. Its totient is φ = 9895392.

The previous prime is 20340643. The next prime is 20340679. The reversal of 20340676 is 67604302.

It can be written as a sum of positive squares in 2 ways, for example, as 18267076 + 2073600 = 4274^2 + 1440^2 .

It is not an unprimeable number, because it can be changed into a prime (20340679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68571 + ... + 68866.

Almost surely, 2^20340676 is an apocalyptic number.

It is an amenable number.

20340676 is a deficient number, since it is larger than the sum of its proper divisors (16217832).

20340676 is a wasteful number, since it uses less digits than its factorization.

20340676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137478 (or 137476 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20340676 is about 4510.0638576410. The cubic root of 20340676 is about 272.9743207787.

Adding to 20340676 its reverse (67604302), we get a palindrome (87944978).

The spelling of 20340676 in words is "twenty million, three hundred forty thousand, six hundred seventy-six".