20711416 has 32 divisors (see below), whose sum is σ = 43516080. Its totient is φ = 9158400.

The previous prime is 20711413. The next prime is 20711459. The reversal of 20711416 is 61411702.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76 + ... + 6436.

Almost surely, 2^20711416 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 20711416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21758040).

20711416 is an abundant number, since it is smaller than the sum of its proper divisors (22804664).

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

20711416 is a wasteful number, since it uses less digits than its factorization.

20711416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415 (or 6411 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 20711416 is about 4550.9796747514. The cubic root of 20711416 is about 274.6228040786.

The spelling of 20711416 in words is "twenty million, seven hundred eleven thousand, four hundred sixteen".