3069440 has 80 divisors (see below), whose sum is σ = 8102160. Its totient is φ = 1105920.

The previous prime is 3069439. The next prime is 3069449. The reversal of 3069440 is 449603.

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 (3069449) 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, 28106 + ... + 28214.

It is an arithmetic number, because the mean of its divisors is an integer number (101277).

Almost surely, 2^3069440 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 3069440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4051080).

3069440 is an abundant number, since it is smaller than the sum of its proper divisors (5032720).

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

3069440 is a wasteful number, since it uses less digits than its factorization.

3069440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3069440 is about 1751.9817350646. The cubic root of 3069440 is about 145.3292557470.

The spelling of 3069440 in words is "three million, sixty-nine thousand, four hundred forty".