20422413 has 24 divisors (see below), whose sum is σ = 33583680. Its totient is φ = 11837760.

The previous prime is 20422357. The next prime is 20422421. The reversal of 20422413 is 31422402.

It is not a de Polignac number, because 20422413 - 2¹⁰ = 20421389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422313) 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, 2208 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (1399320).

Almost surely, 2^20422413 is an apocalyptic number.

20422413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20422413 is a deficient number, since it is larger than the sum of its proper divisors (13161267).

20422413 is a wasteful number, since it uses less digits than its factorization.

20422413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009 (or 9006 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20422413 is about 4519.1163959341. The cubic root of 20422413 is about 273.3394722331.

Adding to 20422413 its reverse (31422402), we get a palindrome (51844815).

The spelling of 20422413 in words is "twenty million, four hundred twenty-two thousand, four hundred thirteen".