9138286028 has 12 divisors (see below), whose sum is σ = 16044093912. Its totient is φ = 4554259200.

The previous prime is 9138286013. The next prime is 9138286049. The reversal of 9138286028 is 8206828319.

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, 3719573 + ... + 3722028.

It is an arithmetic number, because the mean of its divisors is an integer number (1337007826).

Almost surely, 2^9138286028 is an apocalyptic number.

It is an amenable number.

9138286028 is a deficient number, since it is larger than the sum of its proper divisors (6905807884).

9138286028 is a wasteful number, since it uses less digits than its factorization.

9138286028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7441912 (or 7441910 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 9138286028 is about 95594.3828266075. The cubic root of 9138286028 is about 2090.6832948169.

The spelling of 9138286028 in words is "nine billion, one hundred thirty-eight million, two hundred eighty-six thousand, twenty-eight".