7028381 has 2 divisors, whose sum is σ = 7028382. Its totient is φ = 7028380.

The previous prime is 7028377. The next prime is 7028389. The reversal of 7028381 is 1838207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4239481 + 2788900 = 2059^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 7028381 - 2² = 7028377 is a prime.

It is a super-2 number, since 2×7028381² = 98796278962322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7028389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3514190 + 3514191.

It is an arithmetic number, because the mean of its divisors is an integer number (3514191).

Almost surely, 2^7028381 is an apocalyptic number.

It is an amenable number.

7028381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7028381 is an equidigital number, since it uses as much as digits as its factorization.

7028381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 7028381 is about 2651.1093904251. The cubic root of 7028381 is about 191.5512977623.

The spelling of 7028381 in words is "seven million, twenty-eight thousand, three hundred eighty-one".