3072745 has 16 divisors (see below), whose sum is σ = 4071312. Its totient is φ = 2211840.

The previous prime is 3072709. The next prime is 3072749. The reversal of 3072745 is 5472703.

It can be written as a sum of positive squares in 8 ways, for example, as 451584 + 2621161 = 672^2 + 1619^2 .

It is not a de Polignac number, because 3072745 - 2⁹ = 3072233 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3072749) 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, 2089 + ... + 3241.

It is an arithmetic number, because the mean of its divisors is an integer number (254457).

Almost surely, 2^3072745 is an apocalyptic number.

It is an amenable number.

3072745 is a deficient number, since it is larger than the sum of its proper divisors (998567).

3072745 is a wasteful number, since it uses less digits than its factorization.

3072745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 3072745 is about 1752.9246988961. The cubic root of 3072745 is about 145.3813978209.

The spelling of 3072745 in words is "three million, seventy-two thousand, seven hundred forty-five".