20672313 has 8 divisors (see below), whose sum is σ = 27604800. Its totient is φ = 13760688.

The previous prime is 20672299. The next prime is 20672321. The reversal of 20672313 is 31327602.

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

It is not a de Polignac number, because 20672313 - 2¹⁰ = 20671289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20672413) 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, 2733 + ... + 6986.

It is an arithmetic number, because the mean of its divisors is an integer number (3450600).

Almost surely, 2^20672313 is an apocalyptic number.

It is an amenable number.

20672313 is a deficient number, since it is larger than the sum of its proper divisors (6932487).

20672313 is an equidigital number, since it uses as much as digits as its factorization.

20672313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 20672313 is about 4546.6815371213. The cubic root of 20672313 is about 274.4498665914.

Adding to 20672313 its reverse (31327602), we get a palindrome (51999915).

The spelling of 20672313 in words is "twenty million, six hundred seventy-two thousand, three hundred thirteen".