20532212 has 6 divisors (see below), whose sum is σ = 35931378. Its totient is φ = 10266104.

The previous prime is 20532191. The next prime is 20532227. The reversal of 20532212 is 21223502.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 8726116 = 3436^2 + 2954^2 .

It is a super-2 number, since 2×20532212² = 843143459225888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2566523 + ... + 2566530.

It is an arithmetic number, because the mean of its divisors is an integer number (5988563).

Almost surely, 2^20532212 is an apocalyptic number.

It is an amenable number.

20532212 is a deficient number, since it is larger than the sum of its proper divisors (15399166).

20532212 is a wasteful number, since it uses less digits than its factorization.

20532212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133057 (or 5133055 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20532212 is about 4531.2483931032. The cubic root of 20532212 is about 273.8284574573.

Adding to 20532212 its reverse (21223502), we get a palindrome (41755714).

The spelling of 20532212 in words is "twenty million, five hundred thirty-two thousand, two hundred twelve".