20347005208 has 16 divisors (see below), whose sum is σ = 38160645480. Its totient is φ = 10170833088.

The previous prime is 20347005199. The next prime is 20347005221. The reversal of 20347005208 is 80250074302.

It is a self number, because there is not a number n which added to its sum of digits gives 20347005208.

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, 301110 + ... + 362437.

Almost surely, 2^20347005208 is an apocalyptic number.

It is an amenable number.

20347005208 is a deficient number, since it is larger than the sum of its proper divisors (17813640272).

20347005208 is a wasteful number, since it uses less digits than its factorization.

20347005208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667386 (or 667382 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 20347005208 in words is "twenty billion, three hundred forty-seven million, five thousand, two hundred eight".