26782645 has 4 divisors (see below), whose sum is σ = 32139180. Its totient is φ = 21426112.

The previous prime is 26782627. The next prime is 26782663. The reversal of 26782645 is 54628762.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (26782627) and next prime (26782663).

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 23990404 = 1671^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 26782645 - 2¹¹ = 26780597 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 26782598 and 26782607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678260 + ... + 2678269.

It is an arithmetic number, because the mean of its divisors is an integer number (8034795).

Almost surely, 2^26782645 is an apocalyptic number.

It is an amenable number.

26782645 is a deficient number, since it is larger than the sum of its proper divisors (5356535).

26782645 is an equidigital number, since it uses as much as digits as its factorization.

26782645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356534.

The product of its digits is 161280, while the sum is 40.

The square root of 26782645 is about 5175.1951654020. The cubic root of 26782645 is about 299.1928115856.

The spelling of 26782645 in words is "twenty-six million, seven hundred eighty-two thousand, six hundred forty-five".