26890147 has 2 divisors, whose sum is σ = 26890148. Its totient is φ = 26890146.

The previous prime is 26890121. The next prime is 26890153. The reversal of 26890147 is 74109862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26890147 is a prime.

It is not a weakly prime, because it can be changed into another prime (26890117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13445073 + 13445074.

It is an arithmetic number, because the mean of its divisors is an integer number (13445074).

Almost surely, 2^26890147 is an apocalyptic number.

26890147 is a deficient number, since it is larger than the sum of its proper divisors (1).

26890147 is an equidigital number, since it uses as much as digits as its factorization.

26890147 is an evil number, because the sum of its binary digits is even.

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

The square root of 26890147 is about 5185.5710389503. The cubic root of 26890147 is about 299.5925839948.

The spelling of 26890147 in words is "twenty-six million, eight hundred ninety thousand, one hundred forty-seven".