20655349 has 24 divisors (see below), whose sum is σ = 25087104. Its totient is φ = 16848000.

The previous prime is 20655329. The next prime is 20655367. The reversal of 20655349 is 94355602.

It is not a de Polignac number, because 20655349 - 2¹⁹ = 20131061 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 (20655329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76084 + ... + 76354.

It is an arithmetic number, because the mean of its divisors is an integer number (1045296).

Almost surely, 2^20655349 is an apocalyptic number.

It is an amenable number.

20655349 is a deficient number, since it is larger than the sum of its proper divisors (4431755).

20655349 is a wasteful number, since it uses less digits than its factorization.

20655349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 20655349 is about 4544.8156178221. The cubic root of 20655349 is about 274.3747735325.

It can be divided in two parts, 206553 and 49, that added together give a palindrome (206602).

The spelling of 20655349 in words is "twenty million, six hundred fifty-five thousand, three hundred forty-nine".