12028736 has 28 divisors (see below), whose sum is σ = 24696420. Its totient is φ = 5806080.

The previous prime is 12028699. The next prime is 12028739. The reversal of 12028736 is 63782021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9339136 + 2689600 = 3056^2 + 1640^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 12028699 and 12028708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12028739) 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 3 ways as a sum of consecutive naturals, for example, 1385 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (882015).

Almost surely, 2^12028736 is an apocalyptic number.

12028736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12028736 is an abundant number, since it is smaller than the sum of its proper divisors (12667684).

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

12028736 is an equidigital number, since it uses as much as digits as its factorization.

12028736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12028736 is about 3468.2468193599. The cubic root of 12028736 is about 229.1254501008.

The spelling of 12028736 in words is "twelve million, twenty-eight thousand, seven hundred thirty-six".