20355713 has 8 divisors (see below), whose sum is σ = 24275328. Its totient is φ = 16689024.

The previous prime is 20355703. The next prime is 20355733. The reversal of 20355713 is 31755302.

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

It is a cyclic number.

It is not a de Polignac number, because 20355713 - 2¹⁰ = 20354689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20355703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63056 + ... + 63377.

It is an arithmetic number, because the mean of its divisors is an integer number (3034416).

Almost surely, 2^20355713 is an apocalyptic number.

20355713 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20355713 is a deficient number, since it is larger than the sum of its proper divisors (3919615).

20355713 is a wasteful number, since it uses less digits than its factorization.

20355713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126463.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 20355713 is about 4511.7305992269. The cubic root of 20355713 is about 273.0415703266.

The spelling of 20355713 in words is "twenty million, three hundred fifty-five thousand, seven hundred thirteen".