26305631 has 8 divisors (see below), whose sum is σ = 29473104. Its totient is φ = 23267520.

The previous prime is 26305627. The next prime is 26305651. The reversal of 26305631 is 13650362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26305631 - 2² = 26305627 is a prime.

It is a super-2 number, since 2×26305631² = 1383972444616322, which contains 22 as substring.

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 26305631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26305651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31910 + ... + 32723.

It is an arithmetic number, because the mean of its divisors is an integer number (3684138).

Almost surely, 2^26305631 is an apocalyptic number.

26305631 is a deficient number, since it is larger than the sum of its proper divisors (3167473).

26305631 is a wasteful number, since it uses less digits than its factorization.

26305631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64681.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 26305631 is about 5128.9015393162. The cubic root of 26305631 is about 297.4058963719.

Adding to 26305631 its reverse (13650362), we get a palindrome (39955993).

The spelling of 26305631 in words is "twenty-six million, three hundred five thousand, six hundred thirty-one".