20047417 has 8 divisors (see below), whose sum is σ = 22092224. Its totient is φ = 18074448.

The previous prime is 20047411. The next prime is 20047453. The reversal of 20047417 is 71474002.

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

It is not a de Polignac number, because 20047417 - 2⁷ = 20047289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20047391 and 20047400.

It is not an unprimeable number, because it can be changed into a prime (20047411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17373 + ... + 18490.

It is an arithmetic number, because the mean of its divisors is an integer number (2761528).

Almost surely, 2^20047417 is an apocalyptic number.

It is an amenable number.

20047417 is a deficient number, since it is larger than the sum of its proper divisors (2044807).

20047417 is a wasteful number, since it uses less digits than its factorization.

20047417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35919.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20047417 is about 4477.4341982881. The cubic root of 20047417 is about 271.6561082543.

The spelling of 20047417 in words is "twenty million, forty-seven thousand, four hundred seventeen".