2780258 has 16 divisors (see below), whose sum is σ = 4567416. Its totient is φ = 1261440.

The previous prime is 2780243. The next prime is 2780273. The reversal of 2780258 is 8520872.

It is an interprime number because it is at equal distance from previous prime (2780243) and next prime (2780273).

It can be written as a sum of positive squares in 4 ways, for example, as 368449 + 2411809 = 607^2 + 1553^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710 + ... + 2462.

2^2780258 is an apocalyptic number.

2780258 is a deficient number, since it is larger than the sum of its proper divisors (1787158).

2780258 is a wasteful number, since it uses less digits than its factorization.

2780258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2780258 is about 1667.4105673169. The cubic root of 2780258 is about 140.6139364465.

The spelling of 2780258 in words is "two million, seven hundred eighty thousand, two hundred fifty-eight".