20907113 has 8 divisors (see below), whose sum is σ = 21857280. Its totient is φ = 19974240.

The previous prime is 20907091. The next prime is 20907137. The reversal of 20907113 is 31170902.

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 20907113 - 2¹² = 20903017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20907193) 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, 1820 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (2732160).

Almost surely, 2^20907113 is an apocalyptic number.

It is an amenable number.

20907113 is a deficient number, since it is larger than the sum of its proper divisors (950167).

20907113 is an equidigital number, since it uses as much as digits as its factorization.

20907113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8647.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 20907113 is about 4572.4296604759. The cubic root of 20907113 is about 275.4850415076.

The spelling of 20907113 in words is "twenty million, nine hundred seven thousand, one hundred thirteen".