3047640 has 64 divisors (see below), whose sum is σ = 9266400. Its totient is φ = 801792.

The previous prime is 3047623. The next prime is 3047647. The reversal of 3047640 is 467403.

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 3047640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3047647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12964 + ... + 13196.

Almost surely, 2^3047640 is an apocalyptic number.

3047640 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 3047640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4633200).

3047640 is an abundant number, since it is smaller than the sum of its proper divisors (6218760).

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

3047640 is a wasteful number, since it uses less digits than its factorization.

3047640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 3047640 is about 1745.7491228696. The cubic root of 3047640 is about 144.9843819881.

The spelling of 3047640 in words is "three million, forty-seven thousand, six hundred forty".