8738281 has 2 divisors, whose sum is σ = 8738282. Its totient is φ = 8738280.

The previous prime is 8738273. The next prime is 8738293. The reversal of 8738281 is 1828378.

8738281 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8503056 + 235225 = 2916^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 8738281 - 2³ = 8738273 is a prime.

It is a super-2 number, since 2×8738281² = 152715109669922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8738281.

It is not a weakly prime, because it can be changed into another prime (8738201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4369140 + 4369141.

It is an arithmetic number, because the mean of its divisors is an integer number (4369141).

Almost surely, 2^8738281 is an apocalyptic number.

It is an amenable number.

8738281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8738281 is an equidigital number, since it uses as much as digits as its factorization.

8738281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 37.

The square root of 8738281 is about 2956.0583553103. The cubic root of 8738281 is about 205.9722289518.

Subtracting from 8738281 its reverse (1828378), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8738281 in words is "eight million, seven hundred thirty-eight thousand, two hundred eighty-one".