26221648 has 20 divisors (see below), whose sum is σ = 50992768. Its totient is φ = 13062240.

The previous prime is 26221639. The next prime is 26221661. The reversal of 26221648 is 84612262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633 + ... + 7423.

Almost surely, 2^26221648 is an apocalyptic number.

It is an amenable number.

26221648 is a deficient number, since it is larger than the sum of its proper divisors (24771120).

26221648 is a wasteful number, since it uses less digits than its factorization.

26221648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082 (or 6076 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 26221648 is about 5120.7077635811. The cubic root of 26221648 is about 297.0890609500.

The spelling of 26221648 in words is "twenty-six million, two hundred twenty-one thousand, six hundred forty-eight".