9997902736 has 20 divisors (see below), whose sum is σ = 19562731164. Its totient is φ = 4949456000.

The previous prime is 9997902703. The next prime is 9997902737. The reversal of 9997902736 is 6372097999.

It can be written as a sum of positive squares in 2 ways, for example, as 8620008336 + 1377894400 = 92844^2 + 37120^2 .

It is not an unprimeable number, because it can be changed into a prime (9997902737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3091795 + ... + 3095026.

Almost surely, 2^9997902736 is an apocalyptic number.

It is an amenable number.

9997902736 is a deficient number, since it is larger than the sum of its proper divisors (9564828428).

9997902736 is a wasteful number, since it uses less digits than its factorization.

9997902736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186930 (or 6186924 counting only the distinct ones).

The product of its (nonzero) digits is 11573604, while the sum is 61.

The square root of 9997902736 is about 99989.5131301278. The cubic root of 9997902736 is about 2154.2840655576.

The spelling of 9997902736 in words is "nine billion, nine hundred ninety-seven million, nine hundred two thousand, seven hundred thirty-six".