26988293 has 4 divisors (see below), whose sum is σ = 27562560. Its totient is φ = 26414028.

The previous prime is 26988287. The next prime is 26988317. The reversal of 26988293 is 39288962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39288962 = 2 ⋅19644481.

It is a cyclic number.

It is not a de Polignac number, because 26988293 - 2⁴ = 26988277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 574219 = 26988293 / (2 + 6 + 9 + 8 + 8 + 2 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26988233) 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, 287063 + ... + 287156.

It is an arithmetic number, because the mean of its divisors is an integer number (6890640).

Almost surely, 2^26988293 is an apocalyptic number.

It is an amenable number.

26988293 is a deficient number, since it is larger than the sum of its proper divisors (574267).

26988293 is an equidigital number, since it uses as much as digits as its factorization.

26988293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574266.

The product of its digits is 373248, while the sum is 47.

The square root of 26988293 is about 5195.0257939687. The cubic root of 26988293 is about 299.9566344725.

The spelling of 26988293 in words is "twenty-six million, nine hundred eighty-eight thousand, two hundred ninety-three".