2780578 has 16 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 1330000.

The previous prime is 2780527. The next prime is 2780597. The reversal of 2780578 is 8750872.

2780578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2780578² = 15463228028168, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 10953 + ... + 11203.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

2^2780578 is an apocalyptic number.

2780578 is a deficient number, since it is larger than the sum of its proper divisors (1573982).

2780578 is a wasteful number, since it uses less digits than its factorization.

2780578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 2780578 is about 1667.5065217264. The cubic root of 2780578 is about 140.6193309978.

The spelling of 2780578 in words is "two million, seven hundred eighty thousand, five hundred seventy-eight".