26489385 has 24 divisors (see below), whose sum is σ = 49447944. Its totient is φ = 13040640.

The previous prime is 26489377. The next prime is 26489389. The reversal of 26489385 is 58398462.

26489385 is a `hidden beast` number, since 264 + 8 + 9 + 385 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2782224 + 23707161 = 1668^2 + 4869^2 .

It is not a de Polignac number, because 26489385 - 2³ = 26489377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26489385.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26489389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22056 + ... + 23225.

It is an arithmetic number, because the mean of its divisors is an integer number (2060331).

Almost surely, 2^26489385 is an apocalyptic number.

It is an amenable number.

26489385 is a deficient number, since it is larger than the sum of its proper divisors (22958559).

26489385 is a wasteful number, since it uses less digits than its factorization.

26489385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45305 (or 45302 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 26489385 is about 5146.7839472820. The cubic root of 26489385 is about 298.0967847722.

The spelling of 26489385 in words is "twenty-six million, four hundred eighty-nine thousand, three hundred eighty-five".