2947245 has 16 divisors (see below), whose sum is σ = 5389440. Its totient is φ = 1347264.

The previous prime is 2947213. The next prime is 2947249. The reversal of 2947245 is 5427492.

It is not a de Polignac number, because 2947245 - 2⁵ = 2947213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947249) 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 15 ways as a sum of consecutive naturals, for example, 13930 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (336840).

2^2947245 is an apocalyptic number.

It is an amenable number.

2947245 is a deficient number, since it is larger than the sum of its proper divisors (2442195).

2947245 is a wasteful number, since it uses less digits than its factorization.

2947245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28084.

The product of its digits is 20160, while the sum is 33.

The square root of 2947245 is about 1716.7542048878. The cubic root of 2947245 is about 143.3745539758.

It can be divided in two parts, 29 and 47245, that added together give a palindrome (47274).

The spelling of 2947245 in words is "two million, nine hundred forty-seven thousand, two hundred forty-five".