2540978 has 8 divisors (see below), whose sum is σ = 4158000. Its totient is φ = 1154980.

The previous prime is 2540969. The next prime is 2540981. The reversal of 2540978 is 8790452.

It is a happy number.

2540978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57728 + ... + 57771.

It is an arithmetic number, because the mean of its divisors is an integer number (519750).

2^2540978 is an apocalyptic number.

2540978 is a deficient number, since it is larger than the sum of its proper divisors (1617022).

2540978 is a wasteful number, since it uses less digits than its factorization.

2540978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115512.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2540978 is about 1594.0445414103. The cubic root of 2540978 is about 136.4584084351.

The spelling of 2540978 in words is "two million, five hundred forty thousand, nine hundred seventy-eight".