438136 has 8 divisors (see below), whose sum is σ = 821520. Its totient is φ = 219064.

The previous prime is 438133. The next prime is 438143. The reversal of 438136 is 631834.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 438136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27376 + ... + 27391.

It is an arithmetic number, because the mean of its divisors is an integer number (102690).

2⁴³⁸¹³⁶ is an apocalyptic number.

It is an amenable number.

438136 is a deficient number, since it is larger than the sum of its proper divisors (383384).

438136 is a wasteful number, since it uses less digits than its factorization.

438136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54773 (or 54769 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 438136 is about 661.9184239769. The cubic root of 438136 is about 75.9514925922.

The spelling of 438136 in words is "four hundred thirty-eight thousand, one hundred thirty-six".