26409888 has 120 divisors (see below), whose sum is σ = 81230688. Its totient is φ = 8401536.

The previous prime is 26409871. The next prime is 26409907. The reversal of 26409888 is 88890462.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59395 + ... + 59837.

Almost surely, 2^26409888 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 26409888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40615344).

26409888 is an abundant number, since it is smaller than the sum of its proper divisors (54820800).

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

26409888 is a wasteful number, since it uses less digits than its factorization.

26409888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 26409888 is about 5139.0551660787. The cubic root of 26409888 is about 297.7982809740.

The spelling of 26409888 in words is "twenty-six million, four hundred nine thousand, eight hundred eighty-eight".