4081500 has 72 divisors (see below), whose sum is σ = 12889968. Its totient is φ = 1087200.

The previous prime is 4081487. The next prime is 4081501. The reversal of 4081500 is 51804.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4047 + ... + 4953.

Almost surely, 2^4081500 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 4081500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6444984).

4081500 is an abundant number, since it is smaller than the sum of its proper divisors (8808468).

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

4081500 is a wasteful number, since it uses less digits than its factorization.

4081500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 4081500 is about 2020.2722588800. The cubic root of 4081500 is about 159.8109746886.

The spelling of 4081500 in words is "four million, eighty-one thousand, five hundred".