2798945 has 8 divisors (see below), whose sum is σ = 3372840. Its totient is φ = 2229760.

The previous prime is 2798941. The next prime is 2798951. The reversal of 2798945 is 5498972.

It is a happy number.

2798945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16 + 2798929 = 4^2 + 1673^2 .

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

It is not a de Polignac number, because 2798945 - 2² = 2798941 is a prime.

It is a super-2 number, since 2×2798945² = 15668186226050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2798896 and 2798905.

It is not an unprimeable number, because it can be changed into a prime (2798941) by changing a digit.

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, 305 + ... + 2385.

It is an arithmetic number, because the mean of its divisors is an integer number (421605).

2^2798945 is an apocalyptic number.

It is an amenable number.

2798945 is a deficient number, since it is larger than the sum of its proper divisors (573895).

2798945 is a wasteful number, since it uses less digits than its factorization.

2798945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355.

The product of its digits is 181440, while the sum is 44.

The square root of 2798945 is about 1673.0047818222. The cubic root of 2798945 is about 140.9282702743.

The spelling of 2798945 in words is "two million, seven hundred ninety-eight thousand, nine hundred forty-five".