20710416 has 80 divisors (see below), whose sum is σ = 55710720. Its totient is φ = 6625920.

The previous prime is 20710397. The next prime is 20710421. The reversal of 20710416 is 61401702.

It is a junction number, because it is equal to n+sod(n) for n = 20710392 and 20710401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201021 + ... + 201123.

It is an arithmetic number, because the mean of its divisors is an integer number (696384).

Almost surely, 2^20710416 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 20710416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27855360).

20710416 is an abundant number, since it is smaller than the sum of its proper divisors (35000304).

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

20710416 is a wasteful number, since it uses less digits than its factorization.

20710416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20710416 is about 4550.8698069710. The cubic root of 20710416 is about 274.6183841776.

The spelling of 20710416 in words is "twenty million, seven hundred ten thousand, four hundred sixteen".