20711862 has 48 divisors (see below), whose sum is σ = 49008960. Its totient is φ = 6537672.

The previous prime is 20711861. The next prime is 20711869. The reversal of 20711862 is 26811702.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20711861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8113 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (1021020).

Almost surely, 2^20711862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20711862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24504480).

20711862 is an abundant number, since it is smaller than the sum of its proper divisors (28297098).

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

20711862 is a wasteful number, since it uses less digits than its factorization.

20711862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 20711862 is about 4551.0286749261. The cubic root of 20711862 is about 274.6247753086.

The spelling of 20711862 in words is "twenty million, seven hundred eleven thousand, eight hundred sixty-two".