26180720 has 40 divisors (see below), whose sum is σ = 61717776. Its totient is φ = 10326528.

The previous prime is 26180701. The next prime is 26180723. The reversal of 26180720 is 2708162.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 26180720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26180723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3599 + ... + 8081.

Almost surely, 2^26180720 is an apocalyptic number.

26180720 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 26180720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30858888).

26180720 is an abundant number, since it is smaller than the sum of its proper divisors (35537056).

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

26180720 is a wasteful number, since it uses less digits than its factorization.

26180720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4569 (or 4563 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 26180720 is about 5116.7098803821. The cubic root of 26180720 is about 296.9344101969.

Adding to 26180720 its reverse (2708162), we get a palindrome (28888882).

The spelling of 26180720 in words is "twenty-six million, one hundred eighty thousand, seven hundred twenty".