22071072 has 48 divisors (see below), whose sum is σ = 58363200. Its totient is φ = 7302912.

The previous prime is 22071067. The next prime is 22071097. The reversal of 22071072 is 27017022.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13533 + ... + 15075.

It is an arithmetic number, because the mean of its divisors is an integer number (1215900).

Almost surely, 2^22071072 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 22071072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29181600).

22071072 is an abundant number, since it is smaller than the sum of its proper divisors (36292128).

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

22071072 is a wasteful number, since it uses less digits than its factorization.

22071072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 22071072 is about 4697.9859514477. The cubic root of 22071072 is about 280.5053459030.

Adding to 22071072 its reverse (27017022), we get a palindrome (49088094).

The spelling of 22071072 in words is "twenty-two million, seventy-one thousand, seventy-two".