26884240 has 80 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 9732096.

The previous prime is 26884199. The next prime is 26884261. The reversal of 26884240 is 4248862.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 26884196 and 26884205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34576 + ... + 35344.

It is an arithmetic number, because the mean of its divisors is an integer number (859320).

Almost surely, 2^26884240 is an apocalyptic number.

26884240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26884240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34372800).

26884240 is an abundant number, since it is smaller than the sum of its proper divisors (41861360).

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

26884240 is a wasteful number, since it uses less digits than its factorization.

26884240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 26884240 is about 5185.0014464800. The cubic root of 26884240 is about 299.5706450669.

The spelling of 26884240 in words is "twenty-six million, eight hundred eighty-four thousand, two hundred forty".