20298427 has 2 divisors, whose sum is σ = 20298428. Its totient is φ = 20298426.

The previous prime is 20298413. The next prime is 20298449. The reversal of 20298427 is 72489202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20298427 is a prime.

It is a super-2 number, since 2×20298427² = 824052277348658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20298392 and 20298401.

It is not a weakly prime, because it can be changed into another prime (20298457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10149213 + 10149214.

It is an arithmetic number, because the mean of its divisors is an integer number (10149214).

Almost surely, 2^20298427 is an apocalyptic number.

20298427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20298427 is an equidigital number, since it uses as much as digits as its factorization.

20298427 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 34.

The square root of 20298427 is about 4505.3775646443. The cubic root of 20298427 is about 272.7851942197.

The spelling of 20298427 in words is "twenty million, two hundred ninety-eight thousand, four hundred twenty-seven".