20544349 has 8 divisors (see below), whose sum is σ = 23557248. Its totient is φ = 17550960.

The previous prime is 20544343. The next prime is 20544389. The reversal of 20544349 is 94344502.

It is a happy number.

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

It is not a de Polignac number, because 20544349 - 2³ = 20544341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20544349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544341) 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, 2542 + ... + 6895.

It is an arithmetic number, because the mean of its divisors is an integer number (2944656).

Almost surely, 2^20544349 is an apocalyptic number.

It is an amenable number.

20544349 is a deficient number, since it is larger than the sum of its proper divisors (3012899).

20544349 is an equidigital number, since it uses as much as digits as its factorization.

20544349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 20544349 is about 4532.5874508938. The cubic root of 20544349 is about 273.8824019835.

The spelling of 20544349 in words is "twenty million, five hundred forty-four thousand, three hundred forty-nine".