26398872 has 40 divisors (see below), whose sum is σ = 73943100. Its totient is φ = 8799408.

The previous prime is 26398849. The next prime is 26398873. The reversal of 26398872 is 27889362.

26398872 is a `hidden beast` number, since 2 + 639 + 8 + 8 + 7 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26398873) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19722 + ... + 21017.

Almost surely, 2^26398872 is an apocalyptic number.

It is an amenable number.

26398872 is an abundant number, since it is smaller than the sum of its proper divisors (47544228).

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

26398872 is a wasteful number, since it uses less digits than its factorization.

26398872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40757 (or 40744 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 26398872 is about 5137.9832619424. The cubic root of 26398872 is about 297.7568696903.

It can be divided in two parts, 2639 and 8872, that added together give a palindrome (11511).

The spelling of 26398872 in words is "twenty-six million, three hundred ninety-eight thousand, eight hundred seventy-two".