20542718 has 8 divisors (see below), whose sum is σ = 35216112. Its totient is φ = 8804016.

The previous prime is 20542673. The next prime is 20542729. The reversal of 20542718 is 81724502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733655 + ... + 733682.

It is an arithmetic number, because the mean of its divisors is an integer number (4402014).

Almost surely, 2^20542718 is an apocalyptic number.

20542718 is a deficient number, since it is larger than the sum of its proper divisors (14673394).

20542718 is a wasteful number, since it uses less digits than its factorization.

20542718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467346.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 20542718 is about 4532.4075280142. The cubic root of 20542718 is about 273.8751540209.

The spelling of 20542718 in words is "twenty million, five hundred forty-two thousand, seven hundred eighteen".