2540738 has 8 divisors (see below), whose sum is σ = 3834432. Its totient is φ = 1262596.

The previous prime is 2540723. The next prime is 2540743. The reversal of 2540738 is 8370452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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 2540738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3470 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (479304).

2^2540738 is an apocalyptic number.

2540738 is a deficient number, since it is larger than the sum of its proper divisors (1293694).

2540738 is a wasteful number, since it uses less digits than its factorization.

2540738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2540738 is about 1593.9692594275. The cubic root of 2540738 is about 136.4541120514.

The spelling of 2540738 in words is "two million, five hundred forty thousand, seven hundred thirty-eight".