20092191 has 16 divisors (see below), whose sum is σ = 30891264. Its totient is φ = 11378304.

The previous prime is 20092187. The next prime is 20092201. The reversal of 20092191 is 19129002.

It is not a de Polignac number, because 20092191 - 2² = 20092187 is a prime.

It is a super-3 number, since 3×20092191³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20097191) 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 15 ways as a sum of consecutive naturals, for example, 1861 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1930704).

Almost surely, 2^20092191 is an apocalyptic number.

20092191 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20092191 is a deficient number, since it is larger than the sum of its proper divisors (10799073).

20092191 is a wasteful number, since it uses less digits than its factorization.

20092191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 20092191 is about 4482.4313714769. The cubic root of 20092191 is about 271.8581972440.

The spelling of 20092191 in words is "twenty million, ninety-two thousand, one hundred ninety-one".