26980243 has 2 divisors, whose sum is σ = 26980244. Its totient is φ = 26980242.

The previous prime is 26980223. The next prime is 26980253. The reversal of 26980243 is 34208962.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26980243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26980199 and 26980208.

It is not a weakly prime, because it can be changed into another prime (26980223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13490121 + 13490122.

It is an arithmetic number, because the mean of its divisors is an integer number (13490122).

Almost surely, 2^26980243 is an apocalyptic number.

26980243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26980243 is an equidigital number, since it uses as much as digits as its factorization.

26980243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 26980243 is about 5194.2509565865. The cubic root of 26980243 is about 299.9268080705.

The spelling of 26980243 in words is "twenty-six million, nine hundred eighty thousand, two hundred forty-three".