26781916 has 36 divisors (see below), whose sum is σ = 54854128. Its totient is φ = 11207808.

The previous prime is 26781901. The next prime is 26781917. The reversal of 26781916 is 61918762.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26781917) 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, 61636 + ... + 62068.

Almost surely, 2^26781916 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 26781916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27427064).

26781916 is an abundant number, since it is smaller than the sum of its proper divisors (28072212).

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

26781916 is a wasteful number, since it uses less digits than its factorization.

26781916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 489 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 26781916 is about 5175.1247327963. The cubic root of 26781916 is about 299.1900969727.

The spelling of 26781916 in words is "twenty-six million, seven hundred eighty-one thousand, nine hundred sixteen".