2560140 has 96 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 619200.

The previous prime is 2560139. The next prime is 2560147. The reversal of 2560140 is 410652.

It is a happy number.

2560140 is a `hidden beast` number, since 25 + 601 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2560147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5725 + ... + 6155.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2560140 is an apocalyptic number.

2560140 is a gapful number since it is divisible by the number (20) 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 2560140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4354560).

2560140 is an abundant number, since it is smaller than the sum of its proper divisors (6148980).

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

2560140 is a wasteful number, since it uses less digits than its factorization.

2560140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2560140 is about 1600.0437494019. The cubic root of 2560140 is about 136.8005694036.

Adding to 2560140 its reverse (410652), we get a palindrome (2970792).

The spelling of 2560140 in words is "two million, five hundred sixty thousand, one hundred forty".