20040213 has 8 divisors (see below), whose sum is σ = 26742688. Its totient is φ = 13348944.

The previous prime is 20040203. The next prime is 20040221. The reversal of 20040213 is 31204002.

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

It is not a de Polignac number, because 20040213 - 2⁴ = 20040197 is a prime.

It is a super-2 number, since 2×20040213² = 803220274170738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3231 + ... + 7107.

It is an arithmetic number, because the mean of its divisors is an integer number (3342836).

Almost surely, 2^20040213 is an apocalyptic number.

It is an amenable number.

20040213 is a deficient number, since it is larger than the sum of its proper divisors (6702475).

20040213 is a wasteful number, since it uses less digits than its factorization.

20040213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20040213 is about 4476.6296474022. The cubic root of 20040213 is about 271.6235646592.

Adding to 20040213 its reverse (31204002), we get a palindrome (51244215).

The spelling of 20040213 in words is "twenty million, forty thousand, two hundred thirteen".