26213538 has 64 divisors (see below), whose sum is σ = 60060672. Its totient is φ = 7568640.

The previous prime is 26213533. The next prime is 26213557. The reversal of 26213538 is 83531262.

It is not an unprimeable number, because it can be changed into a prime (26213533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89320 + ... + 89612.

It is an arithmetic number, because the mean of its divisors is an integer number (938448).

Almost surely, 2^26213538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26213538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30030336).

26213538 is an abundant number, since it is smaller than the sum of its proper divisors (33847134).

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

26213538 is a wasteful number, since it uses less digits than its factorization.

26213538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 8640, while the sum is 30.

The square root of 26213538 is about 5119.9158196205. The cubic root of 26213538 is about 297.0584292530.

The spelling of 26213538 in words is "twenty-six million, two hundred thirteen thousand, five hundred thirty-eight".