20522272 has 24 divisors (see below), whose sum is σ = 41497596. Its totient is φ = 9983232.

The previous prime is 20522251. The next prime is 20522287. The reversal of 20522272 is 27222502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 55696 = 4524^2 + 236^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7483 + ... + 9850.

Almost surely, 2^20522272 is an apocalyptic number.

It is an amenable number.

20522272 is an abundant number, since it is smaller than the sum of its proper divisors (20975324).

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

20522272 is a wasteful number, since it uses less digits than its factorization.

20522272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17380 (or 17372 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 20522272 is about 4530.1514323475. The cubic root of 20522272 is about 273.7842619558.

Adding to 20522272 its reverse (27222502), we get a palindrome (47744774).

The spelling of 20522272 in words is "twenty million, five hundred twenty-two thousand, two hundred seventy-two".