26164872 has 24 divisors (see below), whose sum is σ = 70863390. Its totient is φ = 8721600.

The previous prime is 26164871. The next prime is 26164889. The reversal of 26164872 is 27846162.

26164872 is a `hidden beast` number, since 2 + 6 + 1 + 648 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26071236 + 93636 = 5106^2 + 306^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (26164871) 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, 181629 + ... + 181772.

Almost surely, 2^26164872 is an apocalyptic number.

It is an amenable number.

26164872 is an abundant number, since it is smaller than the sum of its proper divisors (44698518).

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

26164872 is a wasteful number, since it uses less digits than its factorization.

26164872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363413 (or 363406 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 26164872 is about 5115.1609945338. The cubic root of 26164872 is about 296.8744835744.

The spelling of 26164872 in words is "twenty-six million, one hundred sixty-four thousand, eight hundred seventy-two".