20930336 has 96 divisors (see below), whose sum is σ = 50295168. Its totient is φ = 8386560.

The previous prime is 20930323. The next prime is 20930387. The reversal of 20930336 is 63303902.

It is a super-3 number, since 3×20930336³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394886 + ... + 394938.

It is an arithmetic number, because the mean of its divisors is an integer number (523908).

Almost surely, 2^20930336 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 20930336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25147584).

20930336 is an abundant number, since it is smaller than the sum of its proper divisors (29364832).

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

20930336 is a wasteful number, since it uses less digits than its factorization.

20930336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 20930336 is about 4574.9684151915. The cubic root of 20930336 is about 275.5870039646.

The spelling of 20930336 in words is "twenty million, nine hundred thirty thousand, three hundred thirty-six".