26256780 has 144 divisors (see below), whose sum is σ = 88452000. Its totient is φ = 6251520.

The previous prime is 26256767. The next prime is 26256781. The reversal of 26256780 is 8765262.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26256781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176146 + ... + 176294.

It is an arithmetic number, because the mean of its divisors is an integer number (614250).

Almost surely, 2^26256780 is an apocalyptic number.

26256780 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 26256780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44226000).

26256780 is an abundant number, since it is smaller than the sum of its proper divisors (62195220).

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

26256780 is a wasteful number, since it uses less digits than its factorization.

26256780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 26256780 is about 5124.1370005104. The cubic root of 26256780 is about 297.2216826043.

The spelling of 26256780 in words is "twenty-six million, two hundred fifty-six thousand, seven hundred eighty".