11837840728 has 16 divisors (see below), whose sum is σ = 25366801680. Its totient is φ = 5073360288.

The previous prime is 11837840719. The next prime is 11837840737. The reversal of 11837840728 is 82704873811.

It is an interprime number because it is at equal distance from previous prime (11837840719) and next prime (11837840737).

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, 105694951 + ... + 105695062.

It is an arithmetic number, because the mean of its divisors is an integer number (1585425105).

Almost surely, 2^11837840728 is an apocalyptic number.

It is an amenable number.

11837840728 is an abundant number, since it is smaller than the sum of its proper divisors (13528960952).

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

11837840728 is a wasteful number, since it uses less digits than its factorization.

11837840728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211390026 (or 211390022 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

The spelling of 11837840728 in words is "eleven billion, eight hundred thirty-seven million, eight hundred forty thousand, seven hundred twenty-eight".