20486713 has 8 divisors (see below), whose sum is σ = 22098888. Its totient is φ = 18879744.

The previous prime is 20486707. The next prime is 20486743. The reversal of 20486713 is 31768402.

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 15342889 = 2268^2 + 3917^2 .

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

It is not a de Polignac number, because 20486713 - 2⁵ = 20486681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20486743) 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, 11895 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (2762361).

Almost surely, 2^20486713 is an apocalyptic number.

It is an amenable number.

20486713 is a deficient number, since it is larger than the sum of its proper divisors (1612175).

20486713 is a wasteful number, since it uses less digits than its factorization.

20486713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20486713 is about 4526.2250275478. The cubic root of 20486713 is about 273.6260416103.

The spelling of 20486713 in words is "twenty million, four hundred eighty-six thousand, seven hundred thirteen".