20403352 has 16 divisors (see below), whose sum is σ = 38342160. Its totient is φ = 10178784.

The previous prime is 20403337. The next prime is 20403353. The reversal of 20403352 is 25330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (2396385).

Almost surely, 2^20403352 is an apocalyptic number.

It is an amenable number.

20403352 is a deficient number, since it is larger than the sum of its proper divisors (17938808).

20403352 is a wasteful number, since it uses less digits than its factorization.

20403352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730 (or 5726 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20403352 is about 4517.0069736497. The cubic root of 20403352 is about 273.2544064534.

Adding to 20403352 its reverse (25330402), we get a palindrome (45733754).

The spelling of 20403352 in words is "twenty million, four hundred three thousand, three hundred fifty-two".