20542360 has 32 divisors (see below), whose sum is σ = 46983600. Its totient is φ = 8081280.

The previous prime is 20542349. The next prime is 20542373. The reversal of 20542360 is 6324502.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1770 + ... + 6649.

Almost surely, 2^20542360 is an apocalyptic number.

20542360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20542360 is an abundant number, since it is smaller than the sum of its proper divisors (26441240).

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

20542360 is a wasteful number, since it uses less digits than its factorization.

20542360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491 (or 8487 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20542360 is about 4532.3680344826. The cubic root of 20542360 is about 273.8735630618.

Adding to 20542360 its reverse (6324502), we get a palindrome (26866862).

It can be divided in two parts, 20542 and 360, that added together give a palindrome (20902).

The spelling of 20542360 in words is "twenty million, five hundred forty-two thousand, three hundred sixty".