26561916 has 36 divisors (see below), whose sum is σ = 69311424. Its totient is φ = 8568000.

The previous prime is 26561879. The next prime is 26561929. The reversal of 26561916 is 61916562.

26561916 is a `hidden beast` number, since 2 + 6 + 561 + 91 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10785 + ... + 13016.

Almost surely, 2^26561916 is an apocalyptic number.

It is an amenable number.

26561916 is an abundant number, since it is smaller than the sum of its proper divisors (42749508).

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

26561916 is a wasteful number, since it uses less digits than its factorization.

26561916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23842 (or 23837 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 26561916 is about 5153.8253753887. The cubic root of 26561916 is about 298.3686113174.

The spelling of 26561916 in words is "twenty-six million, five hundred sixty-one thousand, nine hundred sixteen".