20468771 has 2 divisors, whose sum is σ = 20468772. Its totient is φ = 20468770.

The previous prime is 20468753. The next prime is 20468801. The reversal of 20468771 is 17786402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20468771 is a prime.

It is not a weakly prime, because it can be changed into another prime (20468741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10234385 + 10234386.

It is an arithmetic number, because the mean of its divisors is an integer number (10234386).

Almost surely, 2^20468771 is an apocalyptic number.

20468771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20468771 is an equidigital number, since it uses as much as digits as its factorization.

20468771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20468771 is about 4524.2425885445. The cubic root of 20468771 is about 273.5461388894.

The spelling of 20468771 in words is "twenty million, four hundred sixty-eight thousand, seven hundred seventy-one".