288390871 has 2 divisors, whose sum is σ = 288390872. Its totient is φ = 288390870.

The previous prime is 288390863. The next prime is 288390881. The reversal of 288390871 is 178093882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 288390871 - 2³ = 288390863 is a prime.

It is a super-2 number, since 2×288390871² = 166338588952277282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288390821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144195435 + 144195436.

It is an arithmetic number, because the mean of its divisors is an integer number (144195436).

Almost surely, 2^288390871 is an apocalyptic number.

288390871 is a deficient number, since it is larger than the sum of its proper divisors (1).

288390871 is an equidigital number, since it uses as much as digits as its factorization.

288390871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 288390871 is about 16982.0749910015. The cubic root of 288390871 is about 660.6840711145.

The spelling of 288390871 in words is "two hundred eighty-eight million, three hundred ninety thousand, eight hundred seventy-one".