20033445 has 8 divisors (see below), whose sum is σ = 32053536. Its totient is φ = 10684496.

The previous prime is 20033441. The next prime is 20033459. The reversal of 20033445 is 54433002.

It is a happy number.

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 20033445 - 2² = 20033441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033441) 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, 667767 + ... + 667796.

It is an arithmetic number, because the mean of its divisors is an integer number (4006692).

Almost surely, 2^20033445 is an apocalyptic number.

It is an amenable number.

20033445 is a deficient number, since it is larger than the sum of its proper divisors (12020091).

20033445 is a wasteful number, since it uses less digits than its factorization.

20033445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335571.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20033445 is about 4475.8736577343. The cubic root of 20033445 is about 271.5929835592.

Adding to 20033445 its reverse (54433002), we get a palindrome (74466447).

The spelling of 20033445 in words is "twenty million, thirty-three thousand, four hundred forty-five".