26998641 has 12 divisors (see below), whose sum is σ = 40052532. Its totient is φ = 17512416.

The previous prime is 26998637. The next prime is 26998667. The reversal of 26998641 is 14689962.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24206400 + 2792241 = 4920^2 + 1671^2 .

It is not a de Polignac number, because 26998641 - 2² = 26998637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26998691) 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 11 ways as a sum of consecutive naturals, for example, 40206 + ... + 40871.

It is an arithmetic number, because the mean of its divisors is an integer number (3337711).

Almost surely, 2^26998641 is an apocalyptic number.

It is an amenable number.

26998641 is a deficient number, since it is larger than the sum of its proper divisors (13053891).

26998641 is a wasteful number, since it uses less digits than its factorization.

26998641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81120 (or 81117 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 26998641 is about 5196.0216512251. The cubic root of 26998641 is about 299.9949665822.

The spelling of 26998641 in words is "twenty-six million, nine hundred ninety-eight thousand, six hundred forty-one".