20432013 has 16 divisors (see below), whose sum is σ = 31217280. Its totient is φ = 11644416.

The previous prime is 20431987. The next prime is 20432017. The reversal of 20432013 is 31023402.

It is not a de Polignac number, because 20432013 - 2¹⁰ = 20430989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20431983 and 20432001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8533 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (1951080).

Almost surely, 2^20432013 is an apocalyptic number.

It is an amenable number.

20432013 is a deficient number, since it is larger than the sum of its proper divisors (10785267).

20432013 is a wasteful number, since it uses less digits than its factorization.

20432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20432013 is about 4520.1784256819. The cubic root of 20432013 is about 273.3822952478.

Adding to 20432013 its sum of digits (15), we get a triangular number (20432028 = T₆₃₉₂).

Adding to 20432013 its reverse (31023402), we get a palindrome (51455415).

The spelling of 20432013 in words is "twenty million, four hundred thirty-two thousand, thirteen".