12011632 has 40 divisors (see below), whose sum is σ = 24478592. Its totient is φ = 5702400.

The previous prime is 12011621. The next prime is 12011641. The reversal of 12011632 is 23611021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30058 + ... + 30454.

Almost surely, 2^12011632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12239296).

12011632 is an abundant number, since it is smaller than the sum of its proper divisors (12466960).

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

12011632 is a wasteful number, since it uses less digits than its factorization.

12011632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 12011632 is about 3465.7801430558. The cubic root of 12011632 is about 229.0167985999.

Adding to 12011632 its reverse (23611021), we get a palindrome (35622653).

The spelling of 12011632 in words is "twelve million, eleven thousand, six hundred thirty-two".