26561276 has 48 divisors (see below), whose sum is σ = 57661632. Its totient is φ = 10444800.

The previous prime is 26561261. The next prime is 26561281. The reversal of 26561276 is 67216562.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18836 + ... + 20196.

It is an arithmetic number, because the mean of its divisors is an integer number (1201284).

Almost surely, 2^26561276 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 26561276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28830816).

26561276 is an abundant number, since it is smaller than the sum of its proper divisors (31100356).

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

26561276 is a wasteful number, since it uses less digits than its factorization.

26561276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1428 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 26561276 is about 5153.7632852121. The cubic root of 26561276 is about 298.3662149360.

The spelling of 26561276 in words is "twenty-six million, five hundred sixty-one thousand, two hundred seventy-six".