22206072 has 64 divisors (see below), whose sum is σ = 63993600. Its totient is φ = 6289920.

The previous prime is 22206061. The next prime is 22206101. The reversal of 22206072 is 27060222.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21504 + ... + 22512.

It is an arithmetic number, because the mean of its divisors is an integer number (999900).

Almost surely, 2^22206072 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 22206072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31996800).

22206072 is an abundant number, since it is smaller than the sum of its proper divisors (41787528).

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

22206072 is a wasteful number, since it uses less digits than its factorization.

22206072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22206072 is about 4712.3319068164. The cubic root of 22206072 is about 281.0760971363.

Adding to 22206072 its reverse (27060222), we get a palindrome (49266294).

It can be divided in two parts, 2 and 2206072, that multiplied together give a palindrome (4412144).

The spelling of 22206072 in words is "twenty-two million, two hundred six thousand, seventy-two".