20344291 has 8 divisors (see below), whose sum is σ = 23499504. Its totient is φ = 17406720.

The previous prime is 20344273. The next prime is 20344309. The reversal of 20344291 is 19244302.

It is an interprime number because it is at equal distance from previous prime (20344273) and next prime (20344309).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20344291 - 2¹¹ = 20342243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54210 + ... + 54583.

It is an arithmetic number, because the mean of its divisors is an integer number (2937438).

Almost surely, 2^20344291 is an apocalyptic number.

20344291 is a deficient number, since it is larger than the sum of its proper divisors (3155213).

20344291 is a wasteful number, since it uses less digits than its factorization.

20344291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108821.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 20344291 is about 4510.4646102148. The cubic root of 20344291 is about 272.9904910659.

Adding to 20344291 its reverse (19244302), we get a palindrome (39588593).

The spelling of 20344291 in words is "twenty million, three hundred forty-four thousand, two hundred ninety-one".