20381713 has 8 divisors (see below), whose sum is σ = 22278816. Its totient is φ = 18492000.

The previous prime is 20381707. The next prime is 20381717. The reversal of 20381713 is 31718302.

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 20381713 - 2⁹ = 20381201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20381717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5070 + ... + 8152.

It is an arithmetic number, because the mean of its divisors is an integer number (2784852).

Almost surely, 2^20381713 is an apocalyptic number.

It is an amenable number.

20381713 is a deficient number, since it is larger than the sum of its proper divisors (1897103).

20381713 is a wasteful number, since it uses less digits than its factorization.

20381713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20381713 is about 4514.6110574445. The cubic root of 20381713 is about 273.1577712913.

The spelling of 20381713 in words is "twenty million, three hundred eighty-one thousand, seven hundred thirteen".