3055640 has 48 divisors (see below), whose sum is σ = 8002800. Its totient is φ = 1046976.

The previous prime is 3055621. The next prime is 3055649. The reversal of 3055640 is 465503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3055649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1181 + ... + 2739.

It is an arithmetic number, because the mean of its divisors is an integer number (166725).

Almost surely, 2^3055640 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 3055640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4001400).

3055640 is an abundant number, since it is smaller than the sum of its proper divisors (4947160).

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

3055640 is a wasteful number, since it uses less digits than its factorization.

3055640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3055640 is about 1748.0389011690. The cubic root of 3055640 is about 145.1111316096. Note that the first 4 decimals are identical.

The spelling of 3055640 in words is "three million, fifty-five thousand, six hundred forty".