4381536 has 24 divisors (see below), whose sum is σ = 11501784. Its totient is φ = 1460480.

The previous prime is 4381513. The next prime is 4381537. The reversal of 4381536 is 6351834.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381537) 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, 22725 + ... + 22916.

It is an arithmetic number, because the mean of its divisors is an integer number (479241).

Almost surely, 2^4381536 is an apocalyptic number.

It is an amenable number.

4381536 is an abundant number, since it is smaller than the sum of its proper divisors (7120248).

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

4381536 is a wasteful number, since it uses less digits than its factorization.

4381536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45654 (or 45646 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 4381536 is about 2093.2118860736. The cubic root of 4381536 is about 163.6347214201.

The spelling of 4381536 in words is "four million, three hundred eighty-one thousand, five hundred thirty-six".