4138506 has 32 divisors (see below), whose sum is σ = 9270720. Its totient is φ = 1368432.

The previous prime is 4138489. The next prime is 4138507. The reversal of 4138506 is 6058314.

4138506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 4138506.

It is not an unprimeable number, because it can be changed into a prime (4138507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9121 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (289710).

Almost surely, 2^4138506 is an apocalyptic number.

4138506 is an abundant number, since it is smaller than the sum of its proper divisors (5132214).

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

4138506 is a wasteful number, since it uses less digits than its factorization.

4138506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4138506 is about 2034.3318313392. The cubic root of 4138506 is about 160.5515599917.

The spelling of 4138506 in words is "four million, one hundred thirty-eight thousand, five hundred six".