7278045 has 16 divisors (see below), whose sum is σ = 12258240. Its totient is φ = 3677184.

The previous prime is 7278041. The next prime is 7278053. The reversal of 7278045 is 5408727.

7278045 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7278045 - 2² = 7278041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7277997 and 7278015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12484 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (766140).

Almost surely, 2^7278045 is an apocalyptic number.

It is an amenable number.

7278045 is a deficient number, since it is larger than the sum of its proper divisors (4980195).

7278045 is a wasteful number, since it uses less digits than its factorization.

7278045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25564.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 7278045 is about 2697.7852027172. The cubic root of 7278045 is about 193.7930712430.

The spelling of 7278045 in words is "seven million, two hundred seventy-eight thousand, forty-five".