20033245 has 4 divisors (see below), whose sum is σ = 24039900. Its totient is φ = 16026592.

The previous prime is 20033231. The next prime is 20033257. The reversal of 20033245 is 54233002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11471769 + 8561476 = 3387^2 + 2926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20033245 - 2⁵ = 20033213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003320 + ... + 2003329.

It is an arithmetic number, because the mean of its divisors is an integer number (6009975).

Almost surely, 2^20033245 is an apocalyptic number.

It is an amenable number.

20033245 is a deficient number, since it is larger than the sum of its proper divisors (4006655).

20033245 is an equidigital number, since it uses as much as digits as its factorization.

20033245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006654.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20033245 is about 4475.8513156717. The cubic root of 20033245 is about 271.5920797576.

Adding to 20033245 its reverse (54233002), we get a palindrome (74266247).

The spelling of 20033245 in words is "twenty million, thirty-three thousand, two hundred forty-five".