20117467 has 4 divisors (see below), whose sum is σ = 20128680. Its totient is φ = 20106256.

The previous prime is 20117441. The next prime is 20117473. The reversal of 20117467 is 76471102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76471102 = 2 ⋅38235551.

It is a 4-Lehmer number, since φ(20117467) divides (20117467-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 20117467 - 2²³ = 11728859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2242 + ... + 6727.

It is an arithmetic number, because the mean of its divisors is an integer number (5032170).

It is a Poulet number, since it divides 2^20117466-1.

Almost surely, 2^20117467 is an apocalyptic number.

20117467 is the 2243-rd decagonal number.

20117467 is a deficient number, since it is larger than the sum of its proper divisors (11213).

20117467 is an equidigital number, since it uses as much as digits as its factorization.

20117467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11212.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 20117467 is about 4485.2499372945. The cubic root of 20117467 is about 271.9721487847.

Adding to 20117467 its reverse (76471102), we get a palindrome (96588569).

The spelling of 20117467 in words is "twenty million, one hundred seventeen thousand, four hundred sixty-seven".