20886336 has 168 divisors, whose sum is σ = 66568320. Its totient is φ = 6469632.

The previous prime is 20886329. The next prime is 20886361. The reversal of 20886336 is 63368802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20886336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264345 + ... + 264423.

It is an arithmetic number, because the mean of its divisors is an integer number (396240).

Almost surely, 2^20886336 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 20886336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33284160).

20886336 is an abundant number, since it is smaller than the sum of its proper divisors (45681984).

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

20886336 is an equidigital number, since it uses as much as digits as its factorization.

20886336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 20886336 is about 4570.1571088968. The cubic root of 20886336 is about 275.3937543972.

The spelling of 20886336 in words is "twenty million, eight hundred eighty-six thousand, three hundred thirty-six".