22081710 has 64 divisors (see below), whose sum is σ = 61461504. Its totient is φ = 4972800.

The previous prime is 22081693. The next prime is 22081721. The reversal of 22081710 is 1718022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14170 + ... + 15650.

It is an arithmetic number, because the mean of its divisors is an integer number (960336).

Almost surely, 2^22081710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22081710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30730752).

22081710 is an abundant number, since it is smaller than the sum of its proper divisors (39379794).

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

22081710 is a wasteful number, since it uses less digits than its factorization.

22081710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 22081710 is about 4699.1180023490. The cubic root of 22081710 is about 280.5504054358.

Adding to 22081710 its reverse (1718022), we get a palindrome (23799732).

It can be divided in two parts, 22081 and 710, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 22081710 in words is "twenty-two million, eighty-one thousand, seven hundred ten".