26863872 has 144 divisors (see below), whose sum is σ = 86338560. Its totient is φ = 7243776.

The previous prime is 26863847. The next prime is 26863873. The reversal of 26863872 is 27836862.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (26863873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102013 + ... + 102275.

Almost surely, 2^26863872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26863872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43169280).

26863872 is an abundant number, since it is smaller than the sum of its proper divisors (59474688).

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

26863872 is a wasteful number, since it uses less digits than its factorization.

26863872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 294 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 26863872 is about 5183.0369475820. The cubic root of 26863872 is about 299.4949725235.

The spelling of 26863872 in words is "twenty-six million, eight hundred sixty-three thousand, eight hundred seventy-two".