4001072 has 20 divisors (see below), whose sum is σ = 8020320. Its totient is φ = 1931328.

The previous prime is 4001071. The next prime is 4001089. The reversal of 4001072 is 2701004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4001071) 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, 3848 + ... + 4775.

It is an arithmetic number, because the mean of its divisors is an integer number (401016).

Almost surely, 2^4001072 is an apocalyptic number.

It is an amenable number.

4001072 is an abundant number, since it is smaller than the sum of its proper divisors (4019248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4001072 is a wasteful number, since it uses less digits than its factorization.

4001072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 4001072 is about 2000.2679820464. The cubic root of 4001072 is about 158.7542847129.

Adding to 4001072 its reverse (2701004), we get a palindrome (6702076).

The spelling of 4001072 in words is "four million, one thousand, seventy-two".