11837988 has 72 divisors (see below), whose sum is σ = 32716320. Its totient is φ = 3732480.

The previous prime is 11837963. The next prime is 11838011. The reversal of 11837988 is 88973811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18148 + ... + 18788.

Almost surely, 2^11837988 is an apocalyptic number.

11837988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11837988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16358160).

11837988 is an abundant number, since it is smaller than the sum of its proper divisors (20878332).

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

11837988 is a wasteful number, since it uses less digits than its factorization.

11837988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 665 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 11837988 is about 3440.6377315841. The cubic root of 11837988 is about 227.9078575040.

The spelling of 11837988 in words is "eleven million, eight hundred thirty-seven thousand, nine hundred eighty-eight".