11837338728 has 32 divisors (see below), whose sum is σ = 29617617600. Its totient is φ = 3942543488.

The previous prime is 11837338703. The next prime is 11837338759. The reversal of 11837338728 is 82783373811.

It is a super-2 number, since 2×11837338728² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172293 + ... + 230996.

It is an arithmetic number, because the mean of its divisors is an integer number (925550550).

Almost surely, 2^11837338728 is an apocalyptic number.

It is an amenable number.

11837338728 is an abundant number, since it is smaller than the sum of its proper divisors (17780278872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11837338728 is a wasteful number, since it uses less digits than its factorization.

11837338728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404521 (or 404517 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The spelling of 11837338728 in words is "eleven billion, eight hundred thirty-seven million, three hundred thirty-eight thousand, seven hundred twenty-eight".