26197220 has 24 divisors (see below), whose sum is σ = 62873664. Its totient is φ = 8981856.

The previous prime is 26197183. The next prime is 26197267. The reversal of 26197220 is 2279162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93422 + ... + 93701.

It is an arithmetic number, because the mean of its divisors is an integer number (2619736).

Almost surely, 2^26197220 is an apocalyptic number.

26197220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26197220 is an abundant number, since it is smaller than the sum of its proper divisors (36676444).

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

26197220 is a wasteful number, since it uses less digits than its factorization.

26197220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187139 (or 187137 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 26197220 is about 5118.3219906528. The cubic root of 26197220 is about 296.9967765600.

The spelling of 26197220 in words is "twenty-six million, one hundred ninety-seven thousand, two hundred twenty".