20700213 has 8 divisors (see below), whose sum is σ = 27715776. Its totient is φ = 13742400.

The previous prime is 20700193. The next prime is 20700217. The reversal of 20700213 is 31200702.

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

It is not a de Polignac number, because 20700213 - 2⁵ = 20700181 is a prime.

It is a super-4 number, since 4×20700213⁴ (a number of 30 digits) contains 4444 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20700192 and 20700201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20700217) 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, 13593 + ... + 15038.

It is an arithmetic number, because the mean of its divisors is an integer number (3464472).

Almost surely, 2^20700213 is an apocalyptic number.

It is an amenable number.

20700213 is a deficient number, since it is larger than the sum of its proper divisors (7015563).

20700213 is a wasteful number, since it uses less digits than its factorization.

20700213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28875.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20700213 is about 4549.7486743775. The cubic root of 20700213 is about 274.5732797943.

Adding to 20700213 its reverse (31200702), we get a palindrome (51900915).

The spelling of 20700213 in words is "twenty million, seven hundred thousand, two hundred thirteen".