26438320 has 40 divisors (see below), whose sum is σ = 62121024. Its totient is φ = 10463232.

The previous prime is 26438311. The next prime is 26438323. The reversal of 26438320 is 2383462.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (26438323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6057 + ... + 9463.

Almost surely, 2^26438320 is an apocalyptic number.

26438320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26438320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31060512).

26438320 is an abundant number, since it is smaller than the sum of its proper divisors (35682704).

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

26438320 is a wasteful number, since it uses less digits than its factorization.

26438320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517 (or 3511 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 26438320 is about 5141.8206892112. The cubic root of 26438320 is about 297.9051091957.

The spelling of 26438320 in words is "twenty-six million, four hundred thirty-eight thousand, three hundred twenty".