26400012 has 24 divisors (see below), whose sum is σ = 62445936. Its totient is φ = 8679168.

The previous prime is 26399959. The next prime is 26400013. The reversal of 26400012 is 21000462.

It is a junction number, because it is equal to n+sod(n) for n = 26399964 and 26400000.

It is not an unprimeable number, because it can be changed into a prime (26400013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14193 + ... + 15944.

It is an arithmetic number, because the mean of its divisors is an integer number (2601914).

Almost surely, 2^26400012 is an apocalyptic number.

It is an amenable number.

26400012 is an abundant number, since it is smaller than the sum of its proper divisors (36045924).

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

26400012 is a wasteful number, since it uses less digits than its factorization.

26400012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30217 (or 30215 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 26400012 is about 5138.0941992143. The cubic root of 26400012 is about 297.7611557061.

Adding to 26400012 its reverse (21000462), we get a palindrome (47400474).

The spelling of 26400012 in words is "twenty-six million, four hundred thousand, twelve".