20613232 has 20 divisors (see below), whose sum is σ = 40090936. Its totient is φ = 10267200.

The previous prime is 20613209. The next prime is 20613239. The reversal of 20613232 is 23231602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20613239) 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, 2107 + ... + 6757.

Almost surely, 2^20613232 is an apocalyptic number.

It is an amenable number.

20613232 is a deficient number, since it is larger than the sum of its proper divisors (19477704).

20613232 is a wasteful number, since it uses less digits than its factorization.

20613232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936 (or 4930 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20613232 is about 4540.1797321252. The cubic root of 20613232 is about 274.1881599584.

Adding to 20613232 its reverse (23231602), we get a palindrome (43844834).

The spelling of 20613232 in words is "twenty million, six hundred thirteen thousand, two hundred thirty-two".