20233091 has 8 divisors (see below), whose sum is σ = 20771520. Its totient is φ = 19697832.

The previous prime is 20233069. The next prime is 20233093. The reversal of 20233091 is 19033202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233093) 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, 17456 + ... + 18578.

It is an arithmetic number, because the mean of its divisors is an integer number (2596440).

Almost surely, 2^20233091 is an apocalyptic number.

20233091 is a deficient number, since it is larger than the sum of its proper divisors (538429).

20233091 is a wasteful number, since it uses less digits than its factorization.

20233091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20233091 is about 4498.1208298577. The cubic root of 20233091 is about 272.4922018923.

Adding to 20233091 its reverse (19033202), we get a palindrome (39266293).

The spelling of 20233091 in words is "twenty million, two hundred thirty-three thousand, ninety-one".