20542432 has 24 divisors (see below), whose sum is σ = 40666752. Its totient is φ = 10214400.

The previous prime is 20542399. The next prime is 20542447. The reversal of 20542432 is 23424502.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4432 + ... + 7792.

It is an arithmetic number, because the mean of its divisors is an integer number (1694448).

Almost surely, 2^20542432 is an apocalyptic number.

It is an amenable number.

20542432 is a deficient number, since it is larger than the sum of its proper divisors (20124320).

20542432 is a wasteful number, since it uses less digits than its factorization.

20542432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3554 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20542432 is about 4532.3759773435. The cubic root of 20542432 is about 273.8738830327.

Adding to 20542432 its reverse (23424502), we get a palindrome (43966934).

The spelling of 20542432 in words is "twenty million, five hundred forty-two thousand, four hundred thirty-two".