26770257 has 20 divisors (see below), whose sum is σ = 42344676. Its totient is φ = 16796160.

The previous prime is 26770241. The next prime is 26770279. The reversal of 26770257 is 75207762.

It can be written as a sum of positive squares in 2 ways, for example, as 13549761 + 13220496 = 3681^2 + 3636^2 .

It is not a de Polignac number, because 26770257 - 2⁴ = 26770241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26770207) 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 19 ways as a sum of consecutive naturals, for example, 8344 + ... + 11097.

Almost surely, 2^26770257 is an apocalyptic number.

26770257 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26770257 is a deficient number, since it is larger than the sum of its proper divisors (15574419).

26770257 is a wasteful number, since it uses less digits than its factorization.

26770257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19470 (or 19461 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 26770257 is about 5173.9981638961. The cubic root of 26770257 is about 299.1466750900.

The spelling of 26770257 in words is "twenty-six million, seven hundred seventy thousand, two hundred fifty-seven".