26722197 has 16 divisors (see below), whose sum is σ = 39905280. Its totient is φ = 17672256.

The previous prime is 26722193. The next prime is 26722211. The reversal of 26722197 is 79122762.

It is not a de Polignac number, because 26722197 - 2² = 26722193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26722193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468 + ... + 7325.

It is an arithmetic number, because the mean of its divisors is an integer number (2494080).

Almost surely, 2^26722197 is an apocalyptic number.

26722197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26722197 is a deficient number, since it is larger than the sum of its proper divisors (13183083).

26722197 is a wasteful number, since it uses less digits than its factorization.

26722197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7929 (or 7923 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 26722197 is about 5169.3517001651. The cubic root of 26722197 is about 298.9675509056.

The spelling of 26722197 in words is "twenty-six million, seven hundred twenty-two thousand, one hundred ninety-seven".