26520947 has 4 divisors (see below), whose sum is σ = 26533920. Its totient is φ = 26507976.

The previous prime is 26520943. The next prime is 26520959. The reversal of 26520947 is 74902562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26520947 - 2² = 26520943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26520943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2672 + ... + 7757.

It is an arithmetic number, because the mean of its divisors is an integer number (6633480).

Almost surely, 2^26520947 is an apocalyptic number.

26520947 is a deficient number, since it is larger than the sum of its proper divisors (12973).

26520947 is a wasteful number, since it uses less digits than its factorization.

26520947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972.

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

The square root of 26520947 is about 5149.8492210938. The cubic root of 26520947 is about 298.2151315043.

It can be divided in two parts, 265 and 20947, that added together give a palindrome (21212).

The spelling of 26520947 in words is "twenty-six million, five hundred twenty thousand, nine hundred forty-seven".