26749845 has 30 divisors (see below), whose sum is σ = 48138882. Its totient is φ = 14211072.

The previous prime is 26749841. The next prime is 26749847. The reversal of 26749845 is 54894762.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18507204 + 8242641 = 4302^2 + 2871^2 .

It is not a de Polignac number, because 26749845 - 2² = 26749841 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 26749845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26749841) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 103957 + ... + 104213.

Almost surely, 2^26749845 is an apocalyptic number.

It is an amenable number.

26749845 is a deficient number, since it is larger than the sum of its proper divisors (21389037).

26749845 is an frugal number, since it uses more digits than its factorization.

26749845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531 (or 265 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 26749845 is about 5172.0252319570. The cubic root of 26749845 is about 299.0706238396.

Multiplying 26749845 by its sum of digits (45), we get a square (1203743025 = 34695²).

26749845 divided by its sum of digits (45) gives a square (594441 = 771²).

The spelling of 26749845 in words is "twenty-six million, seven hundred forty-nine thousand, eight hundred forty-five".