4081572 has 54 divisors (see below), whose sum is σ = 11352614. Its totient is φ = 1235520.

The previous prime is 4081549. The next prime is 4081579. The reversal of 4081572 is 2751804.

It can be written as a sum of positive squares in only one way, i.e., 2509056 + 1572516 = 1584^2 + 1254^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4081579) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3888 + ... + 4824.

Almost surely, 2^4081572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4081572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5676307).

4081572 is an abundant number, since it is smaller than the sum of its proper divisors (7271042).

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

4081572 is a wasteful number, since it uses less digits than its factorization.

4081572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4081572 is about 2020.2900781818. The cubic root of 4081572 is about 159.8119144021.

It can be divided in two parts, 4081 and 572, that multiplied together give a palindrome (2334332).

The spelling of 4081572 in words is "four million, eighty-one thousand, five hundred seventy-two".