20304132 has 24 divisors (see below), whose sum is σ = 48905472. Its totient is φ = 6549600.

The previous prime is 20304121. The next prime is 20304139. The reversal of 20304132 is 23140302.

It is not an unprimeable number, because it can be changed into a prime (20304139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26919 + ... + 27662.

It is an arithmetic number, because the mean of its divisors is an integer number (2037728).

Almost surely, 2^20304132 is an apocalyptic number.

It is an amenable number.

20304132 is an abundant number, since it is smaller than the sum of its proper divisors (28601340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20304132 is a wasteful number, since it uses less digits than its factorization.

20304132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54619 (or 54617 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 20304132 is about 4506.0106524508. The cubic root of 20304132 is about 272.8107478215.

Adding to 20304132 its reverse (23140302), we get a palindrome (43444434).

The spelling of 20304132 in words is "twenty million, three hundred four thousand, one hundred thirty-two".