20087417 has 8 divisors (see below), whose sum is σ = 23517312. Its totient is φ = 16797600.

The previous prime is 20087413. The next prime is 20087429. The reversal of 20087417 is 71478002.

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 20087417 - 2² = 20087413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20087417.

It is not an unprimeable number, because it can be changed into a prime (20087413) 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, 34709 + ... + 35282.

It is an arithmetic number, because the mean of its divisors is an integer number (2939664).

Almost surely, 2^20087417 is an apocalyptic number.

It is an amenable number.

20087417 is a deficient number, since it is larger than the sum of its proper divisors (3429895).

20087417 is an equidigital number, since it uses as much as digits as its factorization.

20087417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70039.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20087417 is about 4481.8988163501. The cubic root of 20087417 is about 271.8366639389.

The spelling of 20087417 in words is "twenty million, eighty-seven thousand, four hundred seventeen".