26399998 has 16 divisors (see below), whose sum is σ = 41656320. Its totient is φ = 12523896.

The previous prime is 26399959. The next prime is 26400013. The reversal of 26399998 is 89999362.

It is a congruent number.

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, 3583 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (2603520).

Almost surely, 2^26399998 is an apocalyptic number.

26399998 is a deficient number, since it is larger than the sum of its proper divisors (15256322).

26399998 is a wasteful number, since it uses less digits than its factorization.

26399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671.

The product of its digits is 1889568, while the sum is 55.

The square root of 26399998 is about 5138.0928368413. The cubic root of 26399998 is about 297.7611030715.

The spelling of 26399998 in words is "twenty-six million, three hundred ninety-nine thousand, nine hundred ninety-eight".