20036432 has 20 divisors (see below), whose sum is σ = 41807220. Its totient is φ = 9247488.

The previous prime is 20036389. The next prime is 20036461. The reversal of 20036432 is 23463002.

It can be written as a sum of positive squares in 2 ways, for example, as 4857616 + 15178816 = 2204^2 + 3896^2 .

It is a congruent number.

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, 47957 + ... + 48372.

It is an arithmetic number, because the mean of its divisors is an integer number (2090361).

Almost surely, 2^20036432 is an apocalyptic number.

It is an amenable number.

20036432 is an abundant number, since it is smaller than the sum of its proper divisors (21770788).

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

20036432 is a wasteful number, since it uses less digits than its factorization.

20036432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96350 (or 96344 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 20036432 is about 4476.2073231699. The cubic root of 20036432 is about 271.6064811200.

Adding to 20036432 its reverse (23463002), we get a palindrome (43499434).

The spelling of 20036432 in words is "twenty million, thirty-six thousand, four hundred thirty-two".