20166336 has 84 divisors (see below), whose sum is σ = 58432192. Its totient is φ = 6649344.

The previous prime is 20166329. The next prime is 20166359. The reversal of 20166336 is 63366102.

20166336 is a `hidden beast` number, since 20 + 1 + 6 + 633 + 6 = 666.

It is a super-2 number, since 2×20166336² = 813362215329792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90321 + ... + 90543.

Almost surely, 2^20166336 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 20166336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29216096).

20166336 is an abundant number, since it is smaller than the sum of its proper divisors (38265856).

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

20166336 is a wasteful number, since it uses less digits than its factorization.

20166336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20166336 is about 4490.6943783785. The cubic root of 20166336 is about 272.1921940377.

It can be divided in two parts, 20166 and 336, that multiplied together give a palindrome (6775776).

The spelling of 20166336 in words is "twenty million, one hundred sixty-six thousand, three hundred thirty-six".