26306431 has 6 divisors (see below), whose sum is σ = 27764232. Its totient is φ = 24921540.

The previous prime is 26306381. The next prime is 26306453. The reversal of 26306431 is 13460362.

It is not a de Polignac number, because 26306431 - 2²¹ = 24209279 is a prime.

It is a super-2 number, since 2×26306431² = 1384056623915522, 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 = 26306396 and 26306405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26396431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36075 + ... + 36796.

It is an arithmetic number, because the mean of its divisors is an integer number (4627372).

Almost surely, 2^26306431 is an apocalyptic number.

26306431 is a deficient number, since it is larger than the sum of its proper divisors (1457801).

26306431 is an equidigital number, since it uses as much as digits as its factorization.

26306431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72909 (or 72890 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 26306431 is about 5128.9795281323. The cubic root of 26306431 is about 297.4089112183.

Adding to 26306431 its reverse (13460362), we get a palindrome (39766793).

The spelling of 26306431 in words is "twenty-six million, three hundred six thousand, four hundred thirty-one".