26478047 has 4 divisors (see below), whose sum is σ = 26712480. Its totient is φ = 26243616.

The previous prime is 26478041. The next prime is 26478121. The reversal of 26478047 is 74087462.

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 26478047 - 2⁴ = 26478031 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 26478047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117047 + ... + 117272.

It is an arithmetic number, because the mean of its divisors is an integer number (6678120).

Almost surely, 2^26478047 is an apocalyptic number.

26478047 is a deficient number, since it is larger than the sum of its proper divisors (234433).

26478047 is a wasteful number, since it uses less digits than its factorization.

26478047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234432.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 26478047 is about 5145.6823648570. The cubic root of 26478047 is about 298.0542481905.

The spelling of 26478047 in words is "twenty-six million, four hundred seventy-eight thousand, forty-seven".