26406947 has 16 divisors (see below), whose sum is σ = 31598592. Its totient is φ = 21591360.

The previous prime is 26406917. The next prime is 26406949. The reversal of 26406947 is 74960462.

It is a de Polignac number, because none of the positive numbers 2^k-26406947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26406947.

It is not an unprimeable number, because it can be changed into a prime (26406949) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15008 + ... + 16674.

It is an arithmetic number, because the mean of its divisors is an integer number (1974912).

Almost surely, 2^26406947 is an apocalyptic number.

26406947 is a deficient number, since it is larger than the sum of its proper divisors (5191645).

26406947 is a wasteful number, since it uses less digits than its factorization.

26406947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 26406947 is about 5138.7690160193. The cubic root of 26406947 is about 297.7872263107.

The spelling of 26406947 in words is "twenty-six million, four hundred six thousand, nine hundred forty-seven".