26657145 has 24 divisors (see below), whose sum is σ = 47081736. Its totient is φ = 13947648.

The previous prime is 26657101. The next prime is 26657159. The reversal of 26657145 is 54175662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9715689 + 16941456 = 3117^2 + 4116^2 .

It is not a de Polignac number, because 26657145 - 2⁹ = 26656633 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3204 + ... + 7973.

It is an arithmetic number, because the mean of its divisors is an integer number (1961739).

Almost surely, 2^26657145 is an apocalyptic number.

It is an amenable number.

26657145 is a deficient number, since it is larger than the sum of its proper divisors (20424591).

26657145 is a wasteful number, since it uses less digits than its factorization.

26657145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241 (or 11238 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 26657145 is about 5163.0557812210. The cubic root of 26657145 is about 298.7247535022.

The spelling of 26657145 in words is "twenty-six million, six hundred fifty-seven thousand, one hundred forty-five".