12029440 has 80 divisors (see below), whose sum is σ = 29855232. Its totient is φ = 4644864.

The previous prime is 12029431. The next prime is 12029447. The reversal of 12029440 is 4492021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12029447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94657 + ... + 94783.

Almost surely, 2^12029440 is an apocalyptic number.

12029440 is a gapful number since it is divisible by the number (10) 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 12029440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14927616).

12029440 is an abundant number, since it is smaller than the sum of its proper divisors (17825792).

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

12029440 is an equidigital number, since it uses as much as digits as its factorization.

12029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12029440 is about 3468.3483100750. The cubic root of 12029440 is about 229.1299199850.

The spelling of 12029440 in words is "twelve million, twenty-nine thousand, four hundred forty".