2078245 has 8 divisors (see below), whose sum is σ = 2685816. Its totient is φ = 1534656.

The previous prime is 2078243. The next prime is 2078287. The reversal of 2078245 is 5428702.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 1726596 = 593^2 + 1314^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2078245 - 2¹ = 2078243 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15922 + ... + 16051.

It is an arithmetic number, because the mean of its divisors is an integer number (335727).

2^2078245 is an apocalyptic number.

It is an amenable number.

2078245 is a deficient number, since it is larger than the sum of its proper divisors (607571).

2078245 is a wasteful number, since it uses less digits than its factorization.

2078245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31991.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2078245 is about 1441.6119450116. The cubic root of 2078245 is about 127.6141742885.

The spelling of 2078245 in words is "two million, seventy-eight thousand, two hundred forty-five".