26778285 has 12 divisors (see below), whose sum is σ = 46415772. Its totient is φ = 14281728.

The previous prime is 26778263. The next prime is 26778287. The reversal of 26778285 is 58287762.

It can be written as a sum of positive squares in 2 ways, for example, as 3709476 + 23068809 = 1926^2 + 4803^2 .

It is not a de Polignac number, because 26778285 - 2⁵ = 26778253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 595073 = 26778285 / (2 + 6 + 7 + 7 + 8 + 2 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 26778285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26778287) 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 11 ways as a sum of consecutive naturals, for example, 297492 + ... + 297581.

It is an arithmetic number, because the mean of its divisors is an integer number (3867981).

Almost surely, 2^26778285 is an apocalyptic number.

It is an amenable number.

26778285 is a deficient number, since it is larger than the sum of its proper divisors (19637487).

26778285 is a wasteful number, since it uses less digits than its factorization.

26778285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595084 (or 595081 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 26778285 is about 5174.7739081046. The cubic root of 26778285 is about 299.1765753070.

The spelling of 26778285 in words is "twenty-six million, seven hundred seventy-eight thousand, two hundred eighty-five".