20344091 has 8 divisors (see below), whose sum is σ = 21448704. Its totient is φ = 19267560.

The previous prime is 20344073. The next prime is 20344097. The reversal of 20344091 is 19044302.

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 20344091 - 2¹⁴ = 20327707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344097) 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, 5525 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (2681088).

Almost surely, 2^20344091 is an apocalyptic number.

20344091 is a deficient number, since it is larger than the sum of its proper divisors (1104613).

20344091 is a wasteful number, since it uses less digits than its factorization.

20344091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14041.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20344091 is about 4510.4424394953. The cubic root of 20344091 is about 272.9895964942.

Adding to 20344091 its reverse (19044302), we get a palindrome (39388393).

The spelling of 20344091 in words is "twenty million, three hundred forty-four thousand, ninety-one".