20453711 has 16 divisors (see below), whose sum is σ = 21897120. Its totient is φ = 19077120.

The previous prime is 20453701. The next prime is 20453717. The reversal of 20453711 is 11735402.

It is a cyclic number.

It is not a de Polignac number, because 20453711 - 2¹⁰ = 20452687 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 (20453717) 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, 147080 + ... + 147218.

It is an arithmetic number, because the mean of its divisors is an integer number (1368570).

Almost surely, 2^20453711 is an apocalyptic number.

20453711 is a deficient number, since it is larger than the sum of its proper divisors (1443409).

20453711 is a wasteful number, since it uses less digits than its factorization.

20453711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20453711 is about 4522.5779153045. The cubic root of 20453711 is about 273.4790347856.

The spelling of 20453711 in words is "twenty million, four hundred fifty-three thousand, seven hundred eleven".