11997136 has 20 divisors (see below), whose sum is σ = 23328864. Its totient is φ = 5976800.

The previous prime is 11997109. The next prime is 11997137. The reversal of 11997136 is 63179911.

It is a junction number, because it is equal to n+sod(n) for n = 11997095 and 11997104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11997137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771 + ... + 6181.

Almost surely, 2^11997136 is an apocalyptic number.

11997136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11997136 is a deficient number, since it is larger than the sum of its proper divisors (11331728).

11997136 is a wasteful number, since it uses less digits than its factorization.

11997136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 2724 counting only the distinct ones).

The product of its digits is 10206, while the sum is 37.

The square root of 11997136 is about 3463.6882076769. The cubic root of 11997136 is about 228.9246333860.

The spelling of 11997136 in words is "eleven million, nine hundred ninety-seven thousand, one hundred thirty-six".