26403145 has 4 divisors (see below), whose sum is σ = 31683780. Its totient is φ = 21122512.

The previous prime is 26403133. The next prime is 26403187. The reversal of 26403145 is 54130462.

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 8737936 + 17665209 = 2956^2 + 4203^2 .

It is a cyclic number.

It is not a de Polignac number, because 26403145 - 2⁷ = 26403017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640310 + ... + 2640319.

It is an arithmetic number, because the mean of its divisors is an integer number (7920945).

Almost surely, 2^26403145 is an apocalyptic number.

It is an amenable number.

26403145 is a deficient number, since it is larger than the sum of its proper divisors (5280635).

26403145 is an equidigital number, since it uses as much as digits as its factorization.

26403145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280634.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 26403145 is about 5138.3990697493. The cubic root of 26403145 is about 297.7729340947.

The spelling of 26403145 in words is "twenty-six million, four hundred three thousand, one hundred forty-five".