3229440 has 108 divisors (see below), whose sum is σ = 10681944. Its totient is φ = 831488.

The previous prime is 3229433. The next prime is 3229463. The reversal of 3229440 is 449223.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 3229440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111346 + ... + 111374.

Almost surely, 2^3229440 is an apocalyptic number.

3229440 is a gapful number since it is divisible by the number (30) 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 3229440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5340972).

3229440 is an abundant number, since it is smaller than the sum of its proper divisors (7452504).

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

3229440 is an equidigital number, since it uses as much as digits as its factorization.

3229440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3229440 is about 1797.0642726402. The cubic root of 3229440 is about 147.8117889988.

The spelling of 3229440 in words is "three million, two hundred twenty-nine thousand, four hundred forty".