20197233 has 12 divisors (see below), whose sum is σ = 33341568. Its totient is φ = 11541240.

The previous prime is 20197211. The next prime is 20197237. The reversal of 20197233 is 33279102.

It is not a de Polignac number, because 20197233 - 2⁵ = 20197201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20197197 and 20197206.

It is not an unprimeable number, because it can be changed into a prime (20197237) 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 11 ways as a sum of consecutive naturals, for example, 160233 + ... + 160358.

It is an arithmetic number, because the mean of its divisors is an integer number (2778464).

Almost surely, 2^20197233 is an apocalyptic number.

It is an amenable number.

20197233 is a deficient number, since it is larger than the sum of its proper divisors (13144335).

20197233 is a wasteful number, since it uses less digits than its factorization.

20197233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320604 (or 320601 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 20197233 is about 4494.1331755968. The cubic root of 20197233 is about 272.3311323638.

The spelling of 20197233 in words is "twenty million, one hundred ninety-seven thousand, two hundred thirty-three".