20434413 has 4 divisors (see below), whose sum is σ = 27245888. Its totient is φ = 13622940.

The previous prime is 20434411. The next prime is 20434457. The reversal of 20434413 is 31443402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20434413 - 2¹ = 20434411 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 20434413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405733 + ... + 3405738.

It is an arithmetic number, because the mean of its divisors is an integer number (6811472).

Almost surely, 2^20434413 is an apocalyptic number.

It is an amenable number.

20434413 is a deficient number, since it is larger than the sum of its proper divisors (6811475).

20434413 is an equidigital number, since it uses as much as digits as its factorization.

20434413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811474.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20434413 is about 4520.4438941325. The cubic root of 20434413 is about 273.3929989055.

Adding to 20434413 its reverse (31443402), we get a palindrome (51877815).

The spelling of 20434413 in words is "twenty million, four hundred thirty-four thousand, four hundred thirteen".