26780264 has 48 divisors (see below), whose sum is σ = 59559300. Its totient is φ = 11251968.

The previous prime is 26780263. The next prime is 26780279. The reversal of 26780264 is 46208762.

It can be written as a sum of positive squares in 2 ways, for example, as 24700900 + 2079364 = 4970^2 + 1442^2 .

It is not an unprimeable number, because it can be changed into a prime (26780263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20132 + ... + 21420.

Almost surely, 2^26780264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26780264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29779650).

26780264 is an abundant number, since it is smaller than the sum of its proper divisors (32779036).

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

26780264 is a wasteful number, since it uses less digits than its factorization.

26780264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 26780264 is about 5174.9651206554. The cubic root of 26780264 is about 299.1839451574.

The spelling of 26780264 in words is "twenty-six million, seven hundred eighty thousand, two hundred sixty-four".