26780427 has 12 divisors (see below), whose sum is σ = 40017120. Its totient is φ = 17237808.

The previous prime is 26780407. The next prime is 26780431. The reversal of 26780427 is 72408762.

It is not a de Polignac number, because 26780427 - 2¹² = 26776331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26780391 and 26780400.

It is not an unprimeable number, because it can be changed into a prime (26780407) 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 11 ways as a sum of consecutive naturals, for example, 51043 + ... + 51564.

It is an arithmetic number, because the mean of its divisors is an integer number (3334760).

Almost surely, 2^26780427 is an apocalyptic number.

26780427 is a deficient number, since it is larger than the sum of its proper divisors (13236693).

26780427 is a wasteful number, since it uses less digits than its factorization.

26780427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102642 (or 102639 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 26780427 is about 5174.9808695299. The cubic root of 26780427 is about 299.1845521577.

The spelling of 26780427 in words is "twenty-six million, seven hundred eighty thousand, four hundred twenty-seven".