26145231 has 16 divisors (see below), whose sum is σ = 39916800. Its totient is φ = 14911488.

The previous prime is 26145193. The next prime is 26145233. The reversal of 26145231 is 13254162.

It is not a de Polignac number, because 26145231 - 2⁹ = 26144719 is a prime.

It is a super-2 number, since 2×26145231² = 1367146208086722, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26145233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15340 + ... + 16958.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^26145231 is an apocalyptic number.

26145231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26145231 is a deficient number, since it is larger than the sum of its proper divisors (13771569).

26145231 is a wasteful number, since it uses less digits than its factorization.

26145231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its digits is 1440, while the sum is 24.

The square root of 26145231 is about 5113.2407531819. The cubic root of 26145231 is about 296.8001807539.

Adding to 26145231 its reverse (13254162), we get a palindrome (39399393).

The spelling of 26145231 in words is "twenty-six million, one hundred forty-five thousand, two hundred thirty-one".