26857197 has 8 divisors (see below), whose sum is σ = 39788480. Its totient is φ = 17904780.

The previous prime is 26857189. The next prime is 26857199. The reversal of 26857197 is 79175862.

It is not a de Polignac number, because 26857197 - 2³ = 26857189 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 (26857199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497329 + ... + 497382.

It is an arithmetic number, because the mean of its divisors is an integer number (4973560).

Almost surely, 2^26857197 is an apocalyptic number.

26857197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26857197 is a deficient number, since it is larger than the sum of its proper divisors (12931283).

26857197 is an equidigital number, since it uses as much as digits as its factorization.

26857197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994720 (or 994714 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 26857197 is about 5182.3929800817. The cubic root of 26857197 is about 299.4701647998.

The spelling of 26857197 in words is "twenty-six million, eight hundred fifty-seven thousand, one hundred ninety-seven".