20613168 has 60 divisors (see below), whose sum is σ = 59047560. Its totient is φ = 6709248.

The previous prime is 20613167. The next prime is 20613169. The reversal of 20613168 is 86131602.

It is an interprime number because it is at equal distance from previous prime (20613167) and next prime (20613169).

It is not an unprimeable number, because it can be changed into a prime (20613167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4528 + ... + 7856.

It is an arithmetic number, because the mean of its divisors is an integer number (984126).

Almost surely, 2^20613168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20613168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29523780).

20613168 is an abundant number, since it is smaller than the sum of its proper divisors (38434392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20613168 is a wasteful number, since it uses less digits than its factorization.

20613168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3386 (or 3377 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20613168 is about 4540.1726839406. The cubic root of 20613168 is about 274.1878761915.

The spelling of 20613168 in words is "twenty million, six hundred thirteen thousand, one hundred sixty-eight".