20133091 has 8 divisors (see below), whose sum is σ = 22499568. Its totient is φ = 17856000.

The previous prime is 20133089. The next prime is 20133107. The reversal of 20133091 is 19033102.

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 20133091 - 2¹ = 20133089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133041) 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, 21870 + ... + 22771.

It is an arithmetic number, because the mean of its divisors is an integer number (2812446).

Almost surely, 2^20133091 is an apocalyptic number.

20133091 is a deficient number, since it is larger than the sum of its proper divisors (2366477).

20133091 is a wasteful number, since it uses less digits than its factorization.

20133091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44693.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 20133091 is about 4486.9913082153. The cubic root of 20133091 is about 272.0425385820.

Adding to 20133091 its reverse (19033102), we get a palindrome (39166193).

The spelling of 20133091 in words is "twenty million, one hundred thirty-three thousand, ninety-one".