20490167 has 8 divisors (see below), whose sum is σ = 21041856. Its totient is φ = 19943392.

The previous prime is 20490161. The next prime is 20490181. The reversal of 20490167 is 76109402.

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 20490167 - 2¹⁶ = 20424631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20490161) 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, 8153 + ... + 10365.

It is an arithmetic number, because the mean of its divisors is an integer number (2630232).

Almost surely, 2^20490167 is an apocalyptic number.

20490167 is a deficient number, since it is larger than the sum of its proper divisors (551689).

20490167 is a wasteful number, since it uses less digits than its factorization.

20490167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20490167 is about 4526.6065656295. The cubic root of 20490167 is about 273.6414182634.

Adding to 20490167 its reverse (76109402), we get a palindrome (96599569).

The spelling of 20490167 in words is "twenty million, four hundred ninety thousand, one hundred sixty-seven".