26223641 has 4 divisors (see below), whose sum is σ = 26863284. Its totient is φ = 25584000.

The previous prime is 26223619. The next prime is 26223643. The reversal of 26223641 is 14632262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14632262 = 2 ⋅7316131.

It can be written as a sum of positive squares in 2 ways, for example, as 7862416 + 18361225 = 2804^2 + 4285^2 .

It is not a de Polignac number, because 26223641 - 2¹⁰ = 26222617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26223641.

It is not an unprimeable number, because it can be changed into a prime (26223643) 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, 319760 + ... + 319841.

It is an arithmetic number, because the mean of its divisors is an integer number (6715821).

Almost surely, 2^26223641 is an apocalyptic number.

It is an amenable number.

26223641 is a deficient number, since it is larger than the sum of its proper divisors (639643).

26223641 is an equidigital number, since it uses as much as digits as its factorization.

26223641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639642.

The product of its digits is 3456, while the sum is 26.

The square root of 26223641 is about 5120.9023618890. The cubic root of 26223641 is about 297.0965876000.

The spelling of 26223641 in words is "twenty-six million, two hundred twenty-three thousand, six hundred forty-one".