26968221 has 20 divisors (see below), whose sum is σ = 46041952. Its totient is φ = 15410088.

The previous prime is 26968217. The next prime is 26968223. The reversal of 26968221 is 12286962.

It is a happy number.

It is not a de Polignac number, because 26968221 - 2² = 26968217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26968223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23215 + ... + 24348.

Almost surely, 2^26968221 is an apocalyptic number.

26968221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26968221 is a deficient number, since it is larger than the sum of its proper divisors (19073731).

26968221 is an equidigital number, since it uses as much as digits as its factorization.

26968221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47582 (or 47573 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 26968221 is about 5193.0935866784. The cubic root of 26968221 is about 299.8822537921.

The spelling of 26968221 in words is "twenty-six million, nine hundred sixty-eight thousand, two hundred twenty-one".