20430332 has 24 divisors (see below), whose sum is σ = 39403056. Its totient is φ = 9209088.

The previous prime is 20430323. The next prime is 20430349. The reversal of 20430332 is 23303402.

It is a self number, because there is not a number n which added to its sum of digits gives 20430332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2333 + ... + 6804.

It is an arithmetic number, because the mean of its divisors is an integer number (1641794).

Almost surely, 2^20430332 is an apocalyptic number.

It is an amenable number.

20430332 is a deficient number, since it is larger than the sum of its proper divisors (18972724).

20430332 is a wasteful number, since it uses less digits than its factorization.

20430332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9197 (or 9195 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20430332 is about 4519.9924778698. The cubic root of 20430332 is about 273.3747977283.

Adding to 20430332 its reverse (23303402), we get a palindrome (43733734).

The spelling of 20430332 in words is "twenty million, four hundred thirty thousand, three hundred thirty-two".