26438 has 4 divisors (see below), whose sum is σ = 39660. Its totient is φ = 13218.

The previous prime is 26437. The next prime is 26449. The reversal of 26438 is 83462.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6608 + ... + 6611.

It is an arithmetic number, because the mean of its divisors is an integer number (9915).

2²⁶⁴³⁸ is an apocalyptic number.

26438 is a deficient number, since it is larger than the sum of its proper divisors (13222).

26438 is a wasteful number, since it uses less digits than its factorization.

26438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221.

The product of its digits is 1152, while the sum is 23.

The square root of 26438 is about 162.5976629598. The cubic root of 26438 is about 29.7903907278.

It can be divided in two parts, 26 and 438, that added together give a palindrome (464).

The spelling of 26438 in words is "twenty-six thousand, four hundred thirty-eight".