3872145 has 8 divisors (see below), whose sum is σ = 6195456. Its totient is φ = 2065136.

The previous prime is 3872129. The next prime is 3872153. The reversal of 3872145 is 5412783.

3872145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3872145 - 2⁴ = 3872129 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129057 + ... + 129086.

It is an arithmetic number, because the mean of its divisors is an integer number (774432).

Almost surely, 2^3872145 is an apocalyptic number.

It is an amenable number.

3872145 is a deficient number, since it is larger than the sum of its proper divisors (2323311).

3872145 is a wasteful number, since it uses less digits than its factorization.

3872145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258151.

The product of its digits is 6720, while the sum is 30.

The square root of 3872145 is about 1967.7766641568. The cubic root of 3872145 is about 157.0304483388.

The spelling of 3872145 in words is "three million, eight hundred seventy-two thousand, one hundred forty-five".