26197945 has 8 divisors (see below), whose sum is σ = 32451840. Its totient is φ = 20282160.

The previous prime is 26197939. The next prime is 26197957. The reversal of 26197945 is 54979162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26197945 - 2¹³ = 26189753 is a prime.

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, 84355 + ... + 84664.

It is an arithmetic number, because the mean of its divisors is an integer number (4056480).

Almost surely, 2^26197945 is an apocalyptic number.

It is an amenable number.

26197945 is a deficient number, since it is larger than the sum of its proper divisors (6253895).

26197945 is a wasteful number, since it uses less digits than its factorization.

26197945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169055.

The product of its digits is 136080, while the sum is 43.

The square root of 26197945 is about 5118.3928141556. The cubic root of 26197945 is about 296.9995162995. Note that the first 3 decimals are identical.

The spelling of 26197945 in words is "twenty-six million, one hundred ninety-seven thousand, nine hundred forty-five".