3001440 has 144 divisors (see below), whose sum is σ = 10514448. Its totient is φ = 718848.

The previous prime is 3001429. The next prime is 3001441. The reversal of 3001440 is 441003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81102 + ... + 81138.

It is an arithmetic number, because the mean of its divisors is an integer number (73017).

Almost surely, 2^3001440 is an apocalyptic number.

3001440 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 3001440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5257224).

3001440 is an abundant number, since it is smaller than the sum of its proper divisors (7513008).

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

3001440 is a wasteful number, since it uses less digits than its factorization.

3001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3001440 is about 1732.4664498916. The cubic root of 3001440 is about 144.2480293327.

Adding to 3001440 its reverse (441003), we get a palindrome (3442443).

The spelling of 3001440 in words is "three million, one thousand, four hundred forty".