20236432 has 20 divisors (see below), whose sum is σ = 40561020. Its totient is φ = 9769088.

The previous prime is 20236427. The next prime is 20236441. The reversal of 20236432 is 23463202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13075456 + 7160976 = 3616^2 + 2676^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21343 + ... + 22270.

It is an arithmetic number, because the mean of its divisors is an integer number (2028051).

Almost surely, 2^20236432 is an apocalyptic number.

It is an amenable number.

20236432 is an abundant number, since it is smaller than the sum of its proper divisors (20324588).

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

20236432 is a wasteful number, since it uses less digits than its factorization.

20236432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43650 (or 43644 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20236432 is about 4498.4921918349. The cubic root of 20236432 is about 272.5071995404.

Adding to 20236432 its reverse (23463202), we get a palindrome (43699634).

The spelling of 20236432 in words is "twenty million, two hundred thirty-six thousand, four hundred thirty-two".