20572233 has 8 divisors (see below), whose sum is σ = 29923296. Its totient is φ = 12468000.

The previous prime is 20572219. The next prime is 20572241. The reversal of 20572233 is 33227502.

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

It is not a de Polignac number, because 20572233 - 2⁴ = 20572217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20572213) 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, 311668 + ... + 311733.

It is an arithmetic number, because the mean of its divisors is an integer number (3740412).

Almost surely, 2^20572233 is an apocalyptic number.

It is an amenable number.

20572233 is a deficient number, since it is larger than the sum of its proper divisors (9351063).

20572233 is a wasteful number, since it uses less digits than its factorization.

20572233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623415.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 20572233 is about 4535.6623551583. The cubic root of 20572233 is about 274.0062557401.

Adding to 20572233 its reverse (33227502), we get a palindrome (53799735).

The spelling of 20572233 in words is "twenty million, five hundred seventy-two thousand, two hundred thirty-three".