20298871 has 2 divisors, whose sum is σ = 20298872. Its totient is φ = 20298870.

The previous prime is 20298851. The next prime is 20298911. The reversal of 20298871 is 17889202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20298871 - 2⁹ = 20298359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20298871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20298851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149435 + 10149436.

It is an arithmetic number, because the mean of its divisors is an integer number (10149436).

Almost surely, 2^20298871 is an apocalyptic number.

20298871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20298871 is an equidigital number, since it uses as much as digits as its factorization.

20298871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 20298871 is about 4505.4268388245. The cubic root of 20298871 is about 272.7871831381.

The spelling of 20298871 in words is "twenty million, two hundred ninety-eight thousand, eight hundred seventy-one".