20460871 has 2 divisors, whose sum is σ = 20460872. Its totient is φ = 20460870.

The previous prime is 20460859. The next prime is 20460887. The reversal of 20460871 is 17806402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20460871 - 2⁷ = 20460743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20469871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10230435 + 10230436.

It is an arithmetic number, because the mean of its divisors is an integer number (10230436).

Almost surely, 2^20460871 is an apocalyptic number.

20460871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20460871 is an equidigital number, since it uses as much as digits as its factorization.

20460871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20460871 is about 4523.3694299714. The cubic root of 20460871 is about 273.5109423035.

It can be divided in two parts, 204 and 60871, that added together give a triangular number (61075 = T₃₄₉).

The spelling of 20460871 in words is "twenty million, four hundred sixty thousand, eight hundred seventy-one".