20011368 has 64 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 5955840.

The previous prime is 20011361. The next prime is 20011373. The reversal of 20011368 is 86311002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8638 + ... + 10706.

It is an arithmetic number, because the mean of its divisors is an integer number (869400).

Almost surely, 2^20011368 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 20011368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27820800).

20011368 is an abundant number, since it is smaller than the sum of its proper divisors (35630232).

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

20011368 is a wasteful number, since it uses less digits than its factorization.

20011368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20011368 is about 4473.4067554829. The cubic root of 20011368 is about 271.4931810842.

The spelling of 20011368 in words is "twenty million, eleven thousand, three hundred sixty-eight".