20274179 has 2 divisors, whose sum is σ = 20274180. Its totient is φ = 20274178.

The previous prime is 20274173. The next prime is 20274203. The reversal of 20274179 is 97147202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20274179 - 2¹² = 20270083 is a prime.

It is a super-2 number, since 2×20274179² = 822084668248082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20274173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137089 + 10137090.

It is an arithmetic number, because the mean of its divisors is an integer number (10137090).

Almost surely, 2^20274179 is an apocalyptic number.

20274179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20274179 is an equidigital number, since it uses as much as digits as its factorization.

20274179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 20274179 is about 4502.6857540806. The cubic root of 20274179 is about 272.6765301185.

The spelling of 20274179 in words is "twenty million, two hundred seventy-four thousand, one hundred seventy-nine".