26869644 has 60 divisors (see below), whose sum is σ = 70904064. Its totient is φ = 8872416.

The previous prime is 26869643. The next prime is 26869649. The reversal of 26869644 is 44696862.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 26869644.

It is not an unprimeable number, because it can be changed into a prime (26869643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40822 + ... + 41474.

Almost surely, 2^26869644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26869644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35452032).

26869644 is an abundant number, since it is smaller than the sum of its proper divisors (44034420).

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

26869644 is a wasteful number, since it uses less digits than its factorization.

26869644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 785 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 26869644 is about 5183.5937340806. The cubic root of 26869644 is about 299.5164209231.

The spelling of 26869644 in words is "twenty-six million, eight hundred sixty-nine thousand, six hundred forty-four".