26998137 has 8 divisors (see below), whose sum is σ = 39997280. Its totient is φ = 17998740.

The previous prime is 26998129. The next prime is 26998151. The reversal of 26998137 is 73189962.

It is not a de Polignac number, because 26998137 - 2³ = 26998129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26998092 and 26998101.

It is not an unprimeable number, because it can be changed into a prime (26998187) 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 7 ways as a sum of consecutive naturals, for example, 499939 + ... + 499992.

It is an arithmetic number, because the mean of its divisors is an integer number (4999660).

Almost surely, 2^26998137 is an apocalyptic number.

26998137 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26998137 is a deficient number, since it is larger than the sum of its proper divisors (12999143).

26998137 is an equidigital number, since it uses as much as digits as its factorization.

26998137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999940 (or 999934 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 26998137 is about 5195.9731523556. The cubic root of 26998137 is about 299.9930998413.

The spelling of 26998137 in words is "twenty-six million, nine hundred ninety-eight thousand, one hundred thirty-seven".