26689956 has 24 divisors (see below), whose sum is σ = 62497344. Its totient is φ = 8865120.

The previous prime is 26689931. The next prime is 26689963. The reversal of 26689956 is 65998662.

It is a junction number, because it is equal to n+sod(n) for n = 26689899 and 26689908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (2604056).

Almost surely, 2^26689956 is an apocalyptic number.

It is an amenable number.

26689956 is an abundant number, since it is smaller than the sum of its proper divisors (35807388).

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

26689956 is a wasteful number, since it uses less digits than its factorization.

26689956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891 (or 7889 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 26689956 is about 5166.2322828150. The cubic root of 26689956 is about 298.8472652373.

The spelling of 26689956 in words is "twenty-six million, six hundred eighty-nine thousand, nine hundred fifty-six".