3049840 has 40 divisors (see below), whose sum is σ = 7209360. Its totient is φ = 1199616.

The previous prime is 3049807. The next prime is 3049841. The reversal of 3049840 is 489403.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3049799 and 3049808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3049841) 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, 5076 + ... + 5644.

It is an arithmetic number, because the mean of its divisors is an integer number (180234).

Almost surely, 2^3049840 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 3049840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3604680).

3049840 is an abundant number, since it is smaller than the sum of its proper divisors (4159520).

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

3049840 is a wasteful number, since it uses less digits than its factorization.

3049840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3049840 is about 1746.3791111898. The cubic root of 3049840 is about 145.0192602240.

The spelling of 3049840 in words is "three million, forty-nine thousand, eight hundred forty".