26131212 has 18 divisors (see below), whose sum is σ = 66053988. Its totient is φ = 8710392.

The previous prime is 26131211. The next prime is 26131223. The reversal of 26131212 is 21213162.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (26131211) 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 5 ways as a sum of consecutive naturals, for example, 362898 + ... + 362969.

It is an arithmetic number, because the mean of its divisors is an integer number (3669666).

Almost surely, 2^26131212 is an apocalyptic number.

It is an amenable number.

26131212 is an abundant number, since it is smaller than the sum of its proper divisors (39922776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26131212 is a wasteful number, since it uses less digits than its factorization.

26131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725877 (or 725872 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 26131212 is about 5111.8697166497. The cubic root of 26131212 is about 296.7471234598.

Adding to 26131212 its reverse (21213162), we get a palindrome (47344374).

The spelling of 26131212 in words is "twenty-six million, one hundred thirty-one thousand, two hundred twelve".