2540835 has 64 divisors (see below), whose sum is σ = 5184000. Its totient is φ = 1169280.

The previous prime is 2540831. The next prime is 2540849. The reversal of 2540835 is 5380452.

It is a Cunningham number, because it is equal to 1594²-1.

It is not a de Polignac number, because 2540835 - 2² = 2540831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2540799 and 2540808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43036 + ... + 43094.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2^2540835 is an apocalyptic number.

2540835 is an abundant number, since it is smaller than the sum of its proper divisors (2643165).

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

2540835 is a wasteful number, since it uses less digits than its factorization.

2540835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2540835 is about 1593.9996863237. Note that the first 3 decimals coincide. The cubic root of 2540835 is about 136.4558485391.

It can be divided in two parts, 2540 and 835, that added together give a cube (3375 = 15³).

The spelling of 2540835 in words is "two million, five hundred forty thousand, eight hundred thirty-five".