20542326 has 32 divisors (see below), whose sum is σ = 48226560. Its totient is φ = 5710176.

The previous prime is 20542321. The next prime is 20542331. The reversal of 20542326 is 62324502.

It is an interprime number because it is at equal distance from previous prime (20542321) and next prime (20542331).

It is a junction number, because it is equal to n+sod(n) for n = 20542296 and 20542305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5056 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (1507080).

Almost surely, 2^20542326 is an apocalyptic number.

20542326 is an abundant number, since it is smaller than the sum of its proper divisors (27684234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20542326 is a wasteful number, since it uses less digits than its factorization.

20542326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13268.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20542326 is about 4532.3642836824. The cubic root of 20542326 is about 273.8734119642.

Adding to 20542326 its reverse (62324502), we get a palindrome (82866828).

The spelling of 20542326 in words is "twenty million, five hundred forty-two thousand, three hundred twenty-six".