26440193 has 4 divisors (see below), whose sum is σ = 28474068. Its totient is φ = 24406320.

The previous prime is 26440189. The next prime is 26440207. The reversal of 26440193 is 39104462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12475024 + 13965169 = 3532^2 + 3737^2 .

It is a cyclic number.

It is not a de Polignac number, because 26440193 - 2² = 26440189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26440103) 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, 1016918 + ... + 1016943.

It is an arithmetic number, because the mean of its divisors is an integer number (7118517).

Almost surely, 2^26440193 is an apocalyptic number.

It is an amenable number.

26440193 is a deficient number, since it is larger than the sum of its proper divisors (2033875).

26440193 is a wasteful number, since it uses less digits than its factorization.

26440193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033874.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 26440193 is about 5142.0028199137. The cubic root of 26440193 is about 297.9121439732.

Subtracting from 26440193 its sum of digits (29), we obtain a square (26440164 = 5142²).

The spelling of 26440193 in words is "twenty-six million, four hundred forty thousand, one hundred ninety-three".