20522036 has 6 divisors (see below), whose sum is σ = 35913570. Its totient is φ = 10261016.

The previous prime is 20522027. The next prime is 20522039. The reversal of 20522036 is 63022502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 630436 = 4460^2 + 794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20521999 and 20522017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565251 + ... + 2565258.

It is an arithmetic number, because the mean of its divisors is an integer number (5985595).

Almost surely, 2^20522036 is an apocalyptic number.

It is an amenable number.

20522036 is a deficient number, since it is larger than the sum of its proper divisors (15391534).

20522036 is a wasteful number, since it uses less digits than its factorization.

20522036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130513 (or 5130511 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20522036 is about 4530.1253845782. The cubic root of 20522036 is about 273.7832124727.

Adding to 20522036 its reverse (63022502), we get a palindrome (83544538).

The spelling of 20522036 in words is "twenty million, five hundred twenty-two thousand, thirty-six".