26243280 has 240 divisors, whose sum is σ = 103993344. Its totient is φ = 5806080.

The previous prime is 26243251. The next prime is 26243293. The reversal of 26243280 is 8234262.

26243280 is a `hidden beast` number, since 2 + 624 + 32 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206577 + ... + 206703.

Almost surely, 2^26243280 is an apocalyptic number.

26243280 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 26243280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51996672).

26243280 is an abundant number, since it is smaller than the sum of its proper divisors (77750064).

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

26243280 is a wasteful number, since it uses less digits than its factorization.

26243280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 26243280 is about 5122.8195361539. The cubic root of 26243280 is about 297.1707347401.

The spelling of 26243280 in words is "twenty-six million, two hundred forty-three thousand, two hundred eighty".