20036430 has 32 divisors (see below), whose sum is σ = 53431200. Its totient is φ = 5342976.

The previous prime is 20036389. The next prime is 20036461. The reversal of 20036430 is 3463002.

20036430 is a `hidden beast` number, since 20 + 0 + 3 + 643 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36835 + ... + 37374.

It is an arithmetic number, because the mean of its divisors is an integer number (1669725).

Almost surely, 2^20036430 is an apocalyptic number.

20036430 is an abundant number, since it is smaller than the sum of its proper divisors (33394770).

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

20036430 is a wasteful number, since it uses less digits than its factorization.

20036430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74225 (or 74219 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20036430 is about 4476.2070997665. The cubic root of 20036430 is about 271.6064720829.

Adding to 20036430 its reverse (3463002), we get a palindrome (23499432).

The spelling of 20036430 in words is "twenty million, thirty-six thousand, four hundred thirty".