26221944 has 64 divisors (see below), whose sum is σ = 75571200. Its totient is φ = 7426944.

The previous prime is 26221907. The next prime is 26221961. The reversal of 26221944 is 44912262.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 20722 + ... + 21950.

It is an arithmetic number, because the mean of its divisors is an integer number (1180800).

Almost surely, 2^26221944 is an apocalyptic number.

26221944 is a gapful number since it is divisible by the number (24) 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 26221944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37785600).

26221944 is an abundant number, since it is smaller than the sum of its proper divisors (49349256).

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

26221944 is a wasteful number, since it uses less digits than its factorization.

26221944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1368 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 26221944 is about 5120.7366657543. The cubic root of 26221944 is about 297.0901788308.

The spelling of 26221944 in words is "twenty-six million, two hundred twenty-one thousand, nine hundred forty-four".