20246159 has 4 divisors (see below), whose sum is σ = 20628216. Its totient is φ = 19864104.

The previous prime is 20246129. The next prime is 20246173. The reversal of 20246159 is 95164202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20246159 - 2²⁰ = 19197583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20246129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190949 + ... + 191054.

It is an arithmetic number, because the mean of its divisors is an integer number (5157054).

Almost surely, 2^20246159 is an apocalyptic number.

20246159 is a deficient number, since it is larger than the sum of its proper divisors (382057).

20246159 is an equidigital number, since it uses as much as digits as its factorization.

20246159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382056.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20246159 is about 4499.5732019826. The cubic root of 20246159 is about 272.5508543531.

The spelling of 20246159 in words is "twenty million, two hundred forty-six thousand, one hundred fifty-nine".