26198047 has 4 divisors (see below), whose sum is σ = 26371696. Its totient is φ = 26024400.

The previous prime is 26198027. The next prime is 26198063. The reversal of 26198047 is 74089162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26198047 is a prime.

It is a super-2 number, since 2×26198047² = 1372675333228418, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 26197997 and 26198015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26198027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86598 + ... + 86899.

It is an arithmetic number, because the mean of its divisors is an integer number (6592924).

Almost surely, 2^26198047 is an apocalyptic number.

26198047 is a deficient number, since it is larger than the sum of its proper divisors (173649).

26198047 is a wasteful number, since it uses less digits than its factorization.

26198047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173648.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 26198047 is about 5118.4027782112. The cubic root of 26198047 is about 296.9999017485. Note that the first 4 decimals are identical.

The spelling of 26198047 in words is "twenty-six million, one hundred ninety-eight thousand, forty-seven".