20033013 has 48 divisors (see below), whose sum is σ = 36542016. Its totient is φ = 9596160.

The previous prime is 20033009. The next prime is 20033029. The reversal of 20033013 is 31033002.

It is a happy number.

It is not a de Polignac number, because 20033013 - 2² = 20033009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20033013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20545 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (761292).

Almost surely, 2^20033013 is an apocalyptic number.

It is an amenable number.

20033013 is a deficient number, since it is larger than the sum of its proper divisors (16509003).

20033013 is a wasteful number, since it uses less digits than its factorization.

20033013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20033013 is about 4475.8253987393. The cubic root of 20033013 is about 271.5910313402.

Adding to 20033013 its reverse (31033002), we get a palindrome (51066015).

The spelling of 20033013 in words is "twenty million, thirty-three thousand, thirteen".