26780479 has 4 divisors (see below), whose sum is σ = 29215080. Its totient is φ = 24345880.

The previous prime is 26780449. The next prime is 26780483. The reversal of 26780479 is 97408762.

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 26780479 - 2¹³ = 26772287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26780449) 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, 1217284 + ... + 1217305.

It is an arithmetic number, because the mean of its divisors is an integer number (7303770).

Almost surely, 2^26780479 is an apocalyptic number.

26780479 is a deficient number, since it is larger than the sum of its proper divisors (2434601).

26780479 is a wasteful number, since it uses less digits than its factorization.

26780479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434600.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 26780479 is about 5174.9858937006. The cubic root of 26780479 is about 299.1847458014.

The spelling of 26780479 in words is "twenty-six million, seven hundred eighty thousand, four hundred seventy-nine".