2858945 has 4 divisors (see below), whose sum is σ = 3430740. Its totient is φ = 2287152.

The previous prime is 2858929. The next prime is 2858951. The reversal of 2858945 is 5498582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2155024 + 703921 = 1468^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 2858945 - 2⁴ = 2858929 is a prime.

It is a super-3 number, since 3×2858945³ = 70103331343740775875, which contains 333 as substring.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 285890 + ... + 285899.

It is an arithmetic number, because the mean of its divisors is an integer number (857685).

2^2858945 is an apocalyptic number.

It is an amenable number.

2858945 is a deficient number, since it is larger than the sum of its proper divisors (571795).

2858945 is an equidigital number, since it uses as much as digits as its factorization.

2858945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571794.

The product of its digits is 115200, while the sum is 41.

The square root of 2858945 is about 1690.8415064695. The cubic root of 2858945 is about 141.9281690528.

The spelling of 2858945 in words is "two million, eight hundred fifty-eight thousand, nine hundred forty-five".