20380213 has 8 divisors (see below), whose sum is σ = 23611328. Its totient is φ = 17229024.

The previous prime is 20380211. The next prime is 20380219. The reversal of 20380213 is 31208302.

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 20380213 - 2¹ = 20380211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380211) 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, 19431 + ... + 20452.

It is an arithmetic number, because the mean of its divisors is an integer number (2951416).

Almost surely, 2^20380213 is an apocalyptic number.

It is an amenable number.

20380213 is a deficient number, since it is larger than the sum of its proper divisors (3231115).

20380213 is an equidigital number, since it uses as much as digits as its factorization.

20380213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39963.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20380213 is about 4514.4449271201. Note that the first 3 decimals coincide. The cubic root of 20380213 is about 273.1510700765.

Adding to 20380213 its reverse (31208302), we get a palindrome (51588515).

The spelling of 20380213 in words is "twenty million, three hundred eighty thousand, two hundred thirteen".