26266240 has 256 divisors, whose sum is σ = 86365440. Its totient is φ = 7372800.

The previous prime is 26266231. The next prime is 26266243. The reversal of 26266240 is 4266262.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 26266199 and 26266208.

It is not an unprimeable number, because it can be changed into a prime (26266243) 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, 640620 + ... + 640660.

It is an arithmetic number, because the mean of its divisors is an integer number (337365).

Almost surely, 2^26266240 is an apocalyptic number.

26266240 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 26266240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43182720).

26266240 is an abundant number, since it is smaller than the sum of its proper divisors (60099200).

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

26266240 is a wasteful number, since it uses less digits than its factorization.

26266240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 26266240 is about 5125.0599996488. The cubic root of 26266240 is about 297.2573734432.

The spelling of 26266240 in words is "twenty-six million, two hundred sixty-six thousand, two hundred forty".