26787493 has 4 divisors (see below), whose sum is σ = 26942508. Its totient is φ = 26632480.

The previous prime is 26787491. The next prime is 26787521. The reversal of 26787493 is 39478762.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39478762 = 2 ⋅19739381.

It can be written as a sum of positive squares in 2 ways, for example, as 13704804 + 13082689 = 3702^2 + 3617^2 .

It is a cyclic number.

It is not a de Polignac number, because 26787493 - 2¹ = 26787491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26787491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77248 + ... + 77593.

It is an arithmetic number, because the mean of its divisors is an integer number (6735627).

Almost surely, 2^26787493 is an apocalyptic number.

It is an amenable number.

26787493 is a deficient number, since it is larger than the sum of its proper divisors (155015).

26787493 is a wasteful number, since it uses less digits than its factorization.

26787493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155014.

The product of its digits is 508032, while the sum is 46.

The square root of 26787493 is about 5175.6635323406. The cubic root of 26787493 is about 299.2108630668.

The spelling of 26787493 in words is "twenty-six million, seven hundred eighty-seven thousand, four hundred ninety-three".