26690224 has 40 divisors (see below), whose sum is σ = 56871360. Its totient is φ = 12033600.

The previous prime is 26690197. The next prime is 26690239. The reversal of 26690224 is 42209662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23919 + ... + 25009.

It is an arithmetic number, because the mean of its divisors is an integer number (1421784).

Almost surely, 2^26690224 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 26690224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28435680).

26690224 is an abundant number, since it is smaller than the sum of its proper divisors (30181136).

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

26690224 is a wasteful number, since it uses less digits than its factorization.

26690224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 26690224 is about 5166.2582204145. The cubic root of 26690224 is about 298.8482654987.

Adding to 26690224 its reverse (42209662), we get a palindrome (68899886).

The spelling of 26690224 in words is "twenty-six million, six hundred ninety thousand, two hundred twenty-four".