2780375 has 32 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 1948800.

The previous prime is 2780369. The next prime is 2780399. The reversal of 2780375 is 5730872.

It is not a de Polignac number, because 2780375 - 2⁸ = 2780119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47096 + ... + 47154.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

2^2780375 is an apocalyptic number.

2780375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2780375 is a deficient number, since it is larger than the sum of its proper divisors (1150825).

2780375 is a wasteful number, since it uses less digits than its factorization.

2780375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2780375 is about 1667.4456512882. The cubic root of 2780375 is about 140.6159088773.

The spelling of 2780375 in words is "two million, seven hundred eighty thousand, three hundred seventy-five".