20344949 has 8 divisors (see below), whose sum is σ = 21500160. Its totient is φ = 19212336.

The previous prime is 20344927. The next prime is 20344963. The reversal of 20344949 is 94944302.

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 20344949 - 2²⁰ = 19296373 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 (20344969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3782 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (2687520).

Almost surely, 2^20344949 is an apocalyptic number.

It is an amenable number.

20344949 is a deficient number, since it is larger than the sum of its proper divisors (1155211).

20344949 is a wasteful number, since it uses less digits than its factorization.

20344949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20344949 is about 4510.5375511129. The cubic root of 20344949 is about 272.9934341652.

The spelling of 20344949 in words is "twenty million, three hundred forty-four thousand, nine hundred forty-nine".