26423720 has 16 divisors (see below), whose sum is σ = 59453460. Its totient is φ = 10569472.

The previous prime is 26423713. The next prime is 26423731. The reversal of 26423720 is 2732462.

It can be written as a sum of positive squares in 2 ways, for example, as 24344356 + 2079364 = 4934^2 + 1442^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26423720.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 330257 + ... + 330336.

Almost surely, 2^26423720 is an apocalyptic number.

26423720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26423720 is an abundant number, since it is smaller than the sum of its proper divisors (33029740).

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

26423720 is a wasteful number, since it uses less digits than its factorization.

26423720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660604 (or 660600 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 26423720 is about 5140.4007625865. The cubic root of 26423720 is about 297.8502618445.

The spelling of 26423720 in words is "twenty-six million, four hundred twenty-three thousand, seven hundred twenty".