26220684 has 72 divisors (see below), whose sum is σ = 74948160. Its totient is φ = 7094304.

The previous prime is 26220683. The next prime is 26220707. The reversal of 26220684 is 48602262.

It is not an unprimeable number, because it can be changed into a prime (26220683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9999 + ... + 12345.

Almost surely, 2^26220684 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 26220684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37474080).

26220684 is an abundant number, since it is smaller than the sum of its proper divisors (48727476).

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

26220684 is a wasteful number, since it uses less digits than its factorization.

26220684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 26220684 is about 5120.6136351027. The cubic root of 26220684 is about 297.0854202258.

The spelling of 26220684 in words is "twenty-six million, two hundred twenty thousand, six hundred eighty-four".