288340247 has 8 divisors (see below), whose sum is σ = 328786416. Its totient is φ = 250503552.

The previous prime is 288340237. The next prime is 288340267. The reversal of 288340247 is 742043882.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 288340247 - 2¹² = 288336151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288340247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288340237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652133 + ... + 652574.

It is an arithmetic number, because the mean of its divisors is an integer number (41098302).

Almost surely, 2^288340247 is an apocalyptic number.

288340247 is a deficient number, since it is larger than the sum of its proper divisors (40446169).

288340247 is a wasteful number, since it uses less digits than its factorization.

288340247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304737.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 288340247 is about 16980.5844127933. The cubic root of 288340247 is about 660.6454101269.

The spelling of 288340247 in words is "two hundred eighty-eight million, three hundred forty thousand, two hundred forty-seven".