26120197 has 4 divisors (see below), whose sum is σ = 26962816. Its totient is φ = 25277580.

The previous prime is 26120191. The next prime is 26120201. The reversal of 26120197 is 79102162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26120197 - 2⁷ = 26120069 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 (26120191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421263 + ... + 421324.

It is an arithmetic number, because the mean of its divisors is an integer number (6740704).

Almost surely, 2^26120197 is an apocalyptic number.

It is an amenable number.

26120197 is a deficient number, since it is larger than the sum of its proper divisors (842619).

26120197 is an equidigital number, since it uses as much as digits as its factorization.

26120197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842618.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 26120197 is about 5110.7922086502. The cubic root of 26120197 is about 296.7054220014.

The spelling of 26120197 in words is "twenty-six million, one hundred twenty thousand, one hundred ninety-seven".