20243413 has 4 divisors (see below), whose sum is σ = 21434220. Its totient is φ = 19052608.

The previous prime is 20243407. The next prime is 20243467. The reversal of 20243413 is 31434202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5673924 + 14569489 = 2382^2 + 3817^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243413 - 2¹³ = 20235221 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 (20247413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595378 + ... + 595411.

It is an arithmetic number, because the mean of its divisors is an integer number (5358555).

Almost surely, 2^20243413 is an apocalyptic number.

It is an amenable number.

20243413 is a deficient number, since it is larger than the sum of its proper divisors (1190807).

20243413 is a wasteful number, since it uses less digits than its factorization.

20243413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190806.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20243413 is about 4499.2680515835. The cubic root of 20243413 is about 272.5385317115.

Adding to 20243413 its reverse (31434202), we get a palindrome (51677615).

The spelling of 20243413 in words is "twenty million, two hundred forty-three thousand, four hundred thirteen".