20032406 has 4 divisors (see below), whose sum is σ = 30048612. Its totient is φ = 10016202.

The previous prime is 20032399. The next prime is 20032423. The reversal of 20032406 is 60423002.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5008100 + ... + 5008103.

It is an arithmetic number, because the mean of its divisors is an integer number (7512153).

Almost surely, 2^20032406 is an apocalyptic number.

20032406 is a deficient number, since it is larger than the sum of its proper divisors (10016206).

20032406 is a wasteful number, since it uses less digits than its factorization.

20032406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016205.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20032406 is about 4475.7575895037. The cubic root of 20032406 is about 271.5882882444.

Adding to 20032406 its reverse (60423002), we get a palindrome (80455408).

The spelling of 20032406 in words is "twenty million, thirty-two thousand, four hundred six".