26028493 has 4 divisors (see below), whose sum is σ = 26218620. Its totient is φ = 25838368.

The previous prime is 26028487. The next prime is 26028503. The reversal of 26028493 is 39482062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39482062 = 2 ⋅19741031.

It can be written as a sum of positive squares in 2 ways, for example, as 20820969 + 5207524 = 4563^2 + 2282^2 .

It is a cyclic number.

It is not a de Polignac number, because 26028493 - 2¹³ = 26020301 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 (26028403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 94858 + ... + 95131.

It is an arithmetic number, because the mean of its divisors is an integer number (6554655).

Almost surely, 2^26028493 is an apocalyptic number.

It is an amenable number.

26028493 is a deficient number, since it is larger than the sum of its proper divisors (190127).

26028493 is a wasteful number, since it uses less digits than its factorization.

26028493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190126.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 26028493 is about 5101.8127170644. The cubic root of 26028493 is about 296.3577857953.

The spelling of 26028493 in words is "twenty-six million, twenty-eight thousand, four hundred ninety-three".