22020072 has 16 divisors (see below), whose sum is σ = 55050240. Its totient is φ = 7340016.

The previous prime is 22020059. The next prime is 22020079. The reversal of 22020072 is 27002022.

It is not an unprimeable number, because it can be changed into a prime (22020079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458728 + ... + 458775.

It is an arithmetic number, because the mean of its divisors is an integer number (3440640).

Almost surely, 2^22020072 is an apocalyptic number.

It is an amenable number.

22020072 is an abundant number, since it is smaller than the sum of its proper divisors (33030168).

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

22020072 is a wasteful number, since it uses less digits than its factorization.

22020072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917512 (or 917508 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 22020072 is about 4692.5549543932. The cubic root of 22020072 is about 280.2891231225.

Adding to 22020072 its reverse (27002022), we get a palindrome (49022094).

The spelling of 22020072 in words is "twenty-two million, twenty thousand, seventy-two".