3040256646 has 160 divisors (see below), whose sum is σ = 7986211200. Its totient is φ = 857198160.

The previous prime is 3040256599. The next prime is 3040256647. The reversal of 3040256646 is 6466520403.

3040256646 is a `hidden beast` number, since 3 + 0 + 4 + 0 + 2 + 5 + 6 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3040256646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3040256647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16984585 + ... + 16984763.

It is an arithmetic number, because the mean of its divisors is an integer number (49913820).

Almost surely, 2^3040256646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3040256646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3993105600).

3040256646 is an abundant number, since it is smaller than the sum of its proper divisors (4945954554).

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

3040256646 is a wasteful number, since it uses less digits than its factorization.

3040256646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 3040256646 is about 55138.5223414629. The cubic root of 3040256646 is about 1448.6720534870.

The spelling of 3040256646 in words is "three billion, forty million, two hundred fifty-six thousand, six hundred forty-six".