26307972 has 18 divisors (see below), whose sum is σ = 66500798. Its totient is φ = 8769312.

The previous prime is 26307947. The next prime is 26307977. The reversal of 26307972 is 27970362.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 6380676 = 4464^2 + 2526^2 .

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

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 730777 = 26307972 / (2 + 6 + 3 + 0 + 7 + 9 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (26307977) 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 5 ways as a sum of consecutive naturals, for example, 365353 + ... + 365424.

Almost surely, 2^26307972 is an apocalyptic number.

It is an amenable number.

26307972 is an abundant number, since it is smaller than the sum of its proper divisors (40192826).

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

26307972 is a wasteful number, since it uses less digits than its factorization.

26307972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730787 (or 730782 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 26307972 is about 5129.1297507472. The cubic root of 26307972 is about 297.4147183937.

The spelling of 26307972 in words is "twenty-six million, three hundred seven thousand, nine hundred seventy-two".