26217240 has 192 divisors, whose sum is σ = 95558400. Its totient is φ = 5634816.

The previous prime is 26217239. The next prime is 26217253. The reversal of 26217240 is 4271262.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 26217240.

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, 444331 + ... + 444389.

It is an arithmetic number, because the mean of its divisors is an integer number (497700).

Almost surely, 2^26217240 is an apocalyptic number.

26217240 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 26217240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47779200).

26217240 is an abundant number, since it is smaller than the sum of its proper divisors (69341160).

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

26217240 is a wasteful number, since it uses less digits than its factorization.

26217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 26217240 is about 5120.2773362387. The cubic root of 26217240 is about 297.0724125943.

The spelling of 26217240 in words is "twenty-six million, two hundred seventeen thousand, two hundred forty".