20353532 has 6 divisors (see below), whose sum is σ = 35618688. Its totient is φ = 10176764.

The previous prime is 20353523. The next prime is 20353559. The reversal of 20353532 is 23535302.

It is a junction number, because it is equal to n+sod(n) for n = 20353498 and 20353507.

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, 2544188 + ... + 2544195.

It is an arithmetic number, because the mean of its divisors is an integer number (5936448).

Almost surely, 2^20353532 is an apocalyptic number.

It is an amenable number.

20353532 is a deficient number, since it is larger than the sum of its proper divisors (15265156).

20353532 is a wasteful number, since it uses less digits than its factorization.

20353532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088387 (or 5088385 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 20353532 is about 4511.4888894909. The cubic root of 20353532 is about 273.0318183562.

Adding to 20353532 its reverse (23535302), we get a palindrome (43888834).

It can be divided in two parts, 203 and 53532, that added together give a palindrome (53735).

The spelling of 20353532 in words is "twenty million, three hundred fifty-three thousand, five hundred thirty-two".