288407381 has 2 divisors, whose sum is σ = 288407382. Its totient is φ = 288407380.

The previous prime is 288407333. The next prime is 288407387. The reversal of 288407381 is 183704882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239197156 + 49210225 = 15466^2 + 7015^2 .

It is a cyclic number.

It is not a de Polignac number, because 288407381 - 2¹⁰ = 288406357 is a prime.

It is a super-2 number, since 2×288407381² = 166357634830558322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288407387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144203690 + 144203691.

It is an arithmetic number, because the mean of its divisors is an integer number (144203691).

Almost surely, 2^288407381 is an apocalyptic number.

It is an amenable number.

288407381 is a deficient number, since it is larger than the sum of its proper divisors (1).

288407381 is an equidigital number, since it uses as much as digits as its factorization.

288407381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 288407381 is about 16982.5610848305. The cubic root of 288407381 is about 660.6966786401.

The spelling of 288407381 in words is "two hundred eighty-eight million, four hundred seven thousand, three hundred eighty-one".