20393711 has 8 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 18469152.

The previous prime is 20393689. The next prime is 20393717. The reversal of 20393711 is 11739302.

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

It is not a de Polignac number, because 20393711 - 2¹⁴ = 20377327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20393717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14111 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^20393711 is an apocalyptic number.

20393711 is a deficient number, since it is larger than the sum of its proper divisors (1983889).

20393711 is a wasteful number, since it uses less digits than its factorization.

20393711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29665.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 20393711 is about 4515.9396585871. The cubic root of 20393711 is about 273.2113602457.

The spelling of 20393711 in words is "twenty million, three hundred ninety-three thousand, seven hundred eleven".