20000394406 has 8 divisors (see below), whose sum is σ = 30001264704. Its totient is φ = 9999972840.

The previous prime is 20000394397. The next prime is 20000394431. The reversal of 20000394406 is 60449300002.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 41176 + ... + 204196.

It is an arithmetic number, because the mean of its divisors is an integer number (3750158088).

Almost surely, 2^20000394406 is an apocalyptic number.

20000394406 is a deficient number, since it is larger than the sum of its proper divisors (10000870298).

20000394406 is a wasteful number, since it uses less digits than its factorization.

20000394406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224366.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 20000394406 its reverse (60449300002), we get a palindrome (80449694408).

The spelling of 20000394406 in words is "twenty billion, three hundred ninety-four thousand, four hundred six".