26172641 has 4 divisors (see below), whose sum is σ = 28551984. Its totient is φ = 23793300.

The previous prime is 26172631. The next prime is 26172647. The reversal of 26172641 is 14627162.

26172641 is nontrivially palindromic in base 8.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26172641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26172647) 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, 1189655 + ... + 1189676.

It is an arithmetic number, because the mean of its divisors is an integer number (7137996).

Almost surely, 2^26172641 is an apocalyptic number.

It is an amenable number.

26172641 is a deficient number, since it is larger than the sum of its proper divisors (2379343).

26172641 is a wasteful number, since it uses less digits than its factorization.

26172641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379342.

The product of its digits is 4032, while the sum is 29.

The square root of 26172641 is about 5115.9203473080. The cubic root of 26172641 is about 296.9038638012.

The spelling of 26172641 in words is "twenty-six million, one hundred seventy-two thousand, six hundred forty-one".