3872071 has 4 divisors (see below), whose sum is σ = 4425232. Its totient is φ = 3318912.

The previous prime is 3872059. The next prime is 3872101. The reversal of 3872071 is 1702783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3872071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276570 + ... + 276583.

It is an arithmetic number, because the mean of its divisors is an integer number (1106308).

Almost surely, 2^3872071 is an apocalyptic number.

3872071 is a deficient number, since it is larger than the sum of its proper divisors (553161).

3872071 is an equidigital number, since it uses as much as digits as its factorization.

3872071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553160.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 3872071 is about 1967.7578611201. The cubic root of 3872071 is about 157.0294480037.

The spelling of 3872071 in words is "three million, eight hundred seventy-two thousand, seventy-one".