26443972 has 18 divisors (see below), whose sum is σ = 48843438. Its totient is φ = 12525408.

The previous prime is 26443943. The next prime is 26443973. The reversal of 26443972 is 27934462.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 6677056 = 4446^2 + 2584^2 .

It is not an unprimeable number, because it can be changed into a prime (26443973) 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, 7713 + ... + 10600.

Almost surely, 2^26443972 is an apocalyptic number.

It is an amenable number.

26443972 is a deficient number, since it is larger than the sum of its proper divisors (22399466).

26443972 is a wasteful number, since it uses less digits than its factorization.

26443972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18355 (or 18334 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 26443972 is about 5142.3702706048. The cubic root of 26443972 is about 297.9263364611.

The spelling of 26443972 in words is "twenty-six million, four hundred forty-three thousand, nine hundred seventy-two".