20847676 has 6 divisors (see below), whose sum is σ = 36483440. Its totient is φ = 10423836.

The previous prime is 20847643. The next prime is 20847679. The reversal of 20847676 is 67674802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20847679) 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 as a sum of consecutive naturals, namely, 2605956 + ... + 2605963.

Almost surely, 2^20847676 is an apocalyptic number.

It is an amenable number.

20847676 is a deficient number, since it is larger than the sum of its proper divisors (15635764).

20847676 is a wasteful number, since it uses less digits than its factorization.

20847676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5211923 (or 5211921 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 20847676 is about 4565.9255359675. The cubic root of 20847676 is about 275.2237341787.

The spelling of 20847676 in words is "twenty million, eight hundred forty-seven thousand, six hundred seventy-six".