2540878 has 8 divisors (see below), whose sum is σ = 3832920. Its totient is φ = 1263240.

The previous prime is 2540869. The next prime is 2540887. The reversal of 2540878 is 8780452.

2540878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2540869) and next prime (2540887).

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

It is a super-2 number, since 2×2540878² = 12912122021768, which contains 22 as substring.

It is a congruent number.

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, 3148 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (479115).

2^2540878 is an apocalyptic number.

2540878 is a deficient number, since it is larger than the sum of its proper divisors (1292042).

2540878 is a wasteful number, since it uses less digits than its factorization.

2540878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2540878 is about 1594.0131743496. The cubic root of 2540878 is about 136.4566183081.

The spelling of 2540878 in words is "two million, five hundred forty thousand, eight hundred seventy-eight".