3247145 has 16 divisors (see below), whose sum is σ = 4352832. Its totient is φ = 2304960.

The previous prime is 3247133. The next prime is 3247147. The reversal of 3247145 is 5417423.

It is not a de Polignac number, because 3247145 - 2⁸ = 3246889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3247147) 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, 1679 + ... + 3051.

It is an arithmetic number, because the mean of its divisors is an integer number (272052).

Almost surely, 2^3247145 is an apocalyptic number.

It is an amenable number.

3247145 is a deficient number, since it is larger than the sum of its proper divisors (1105687).

3247145 is a wasteful number, since it uses less digits than its factorization.

3247145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its digits is 3360, while the sum is 26.

The square root of 3247145 is about 1801.9836292264. The cubic root of 3247145 is about 148.0814167325.

It can be divided in two parts, 32471 and 45, that multiplied together give a triangular number (1461195 = T₁₇₀₉).

The spelling of 3247145 in words is "three million, two hundred forty-seven thousand, one hundred forty-five".