20432236 has 24 divisors (see below), whose sum is σ = 39194064. Its totient is φ = 9242880.

The previous prime is 20432233. The next prime is 20432261. The reversal of 20432236 is 63223402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20432233) 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, 9256 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (1633086).

Almost surely, 2^20432236 is an apocalyptic number.

It is an amenable number.

20432236 is a deficient number, since it is larger than the sum of its proper divisors (18761828).

20432236 is a wasteful number, since it uses less digits than its factorization.

20432236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2239 counting only the distinct ones).

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

The square root of 20432236 is about 4520.2030927824. The cubic root of 20432236 is about 273.3832898313.

Adding to 20432236 its reverse (63223402), we get a palindrome (83655638).

The spelling of 20432236 in words is "twenty million, four hundred thirty-two thousand, two hundred thirty-six".