20998341 has 24 divisors (see below), whose sum is σ = 37331840. Its totient is φ = 11075616.

The previous prime is 20998303. The next prime is 20998387. The reversal of 20998341 is 14389902.

It is not a de Polignac number, because 20998341 - 2⁹ = 20997829 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20998296 and 20998305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20998141) 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, 12001 + ... + 13638.

Almost surely, 2^20998341 is an apocalyptic number.

20998341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20998341 is a deficient number, since it is larger than the sum of its proper divisors (16333499).

20998341 is a wasteful number, since it uses less digits than its factorization.

20998341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25665 (or 25662 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20998341 is about 4582.3946796408. The cubic root of 20998341 is about 275.8851522798.

It can be divided in two parts, 2099 and 8341, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 20998341 in words is "twenty million, nine hundred ninety-eight thousand, three hundred forty-one".