26970138 has 64 divisors (see below), whose sum is σ = 65345280. Its totient is φ = 8195904.

The previous prime is 26970133. The next prime is 26970173. The reversal of 26970138 is 83107962.

It is not an unprimeable number, because it can be changed into a prime (26970133) 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 31 ways as a sum of consecutive naturals, for example, 72120 + ... + 72492.

It is an arithmetic number, because the mean of its divisors is an integer number (1021020).

Almost surely, 2^26970138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26970138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32672640).

26970138 is an abundant number, since it is smaller than the sum of its proper divisors (38375142).

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

26970138 is a wasteful number, since it uses less digits than its factorization.

26970138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 26970138 is about 5193.2781554621. The cubic root of 26970138 is about 299.8893592004.

It can be divided in two parts, 269 and 70138, that added together give a palindrome (70407).

The spelling of 26970138 in words is "twenty-six million, nine hundred seventy thousand, one hundred thirty-eight".