12003552 has 120 divisors (see below), whose sum is σ = 38602872. Its totient is φ = 3628800.

The previous prime is 12003527. The next prime is 12003553. The reversal of 12003552 is 25530021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003553) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 28302 + ... + 28722.

Almost surely, 2^12003552 is an apocalyptic number.

12003552 is a gapful number since it is divisible by the number (12) 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 12003552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19301436).

12003552 is an abundant number, since it is smaller than the sum of its proper divisors (26599320).

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

12003552 is a wasteful number, since it uses less digits than its factorization.

12003552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 12003552 is about 3464.6142642436. The cubic root of 12003552 is about 228.9654353100.

Adding to 12003552 its reverse (25530021), we get a palindrome (37533573).

The spelling of 12003552 in words is "twelve million, three thousand, five hundred fifty-two".