26326631 has 4 divisors (see below), whose sum is σ = 26472264. Its totient is φ = 26181000.

The previous prime is 26326613. The next prime is 26326639. The reversal of 26326631 is 13662362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26326631 is a prime.

It is a super-2 number, since 2×26326631² = 1386182999620322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26326594 and 26326603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26326639) 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, 72545 + ... + 72906.

It is an arithmetic number, because the mean of its divisors is an integer number (6618066).

Almost surely, 2^26326631 is an apocalyptic number.

26326631 is a deficient number, since it is larger than the sum of its proper divisors (145633).

26326631 is a wasteful number, since it uses less digits than its factorization.

26326631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145632.

The product of its digits is 7776, while the sum is 29.

The square root of 26326631 is about 5130.9483528876. The cubic root of 26326631 is about 297.4850158402.

Adding to 26326631 its reverse (13662362), we get a palindrome (39988993).

The spelling of 26326631 in words is "twenty-six million, three hundred twenty-six thousand, six hundred thirty-one".