8720034406 has 32 divisors (see below), whose sum is σ = 13617253440. Its totient is φ = 4184678400.

The previous prime is 8720034397. The next prime is 8720034419. The reversal of 8720034406 is 6044300278.

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, 3241510 + ... + 3244198.

It is an arithmetic number, because the mean of its divisors is an integer number (425539170).

Almost surely, 2^8720034406 is an apocalyptic number.

8720034406 is a deficient number, since it is larger than the sum of its proper divisors (4897219034).

8720034406 is a wasteful number, since it uses less digits than its factorization.

8720034406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 8720034406 is about 93381.1244631376. The cubic root of 8720034406 is about 2058.2876402248.

The spelling of 8720034406 in words is "eight billion, seven hundred twenty million, thirty-four thousand, four hundred six".