288997147 has 4 divisors (see below), whose sum is σ = 290040736. Its totient is φ = 287953560.

The previous prime is 288997117. The next prime is 288997157. The reversal of 288997147 is 741799882.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-288997147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288997117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521379 + ... + 521932.

It is an arithmetic number, because the mean of its divisors is an integer number (72510184).

Almost surely, 2^288997147 is an apocalyptic number.

288997147 is a deficient number, since it is larger than the sum of its proper divisors (1043589).

288997147 is a wasteful number, since it uses less digits than its factorization.

288997147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043588.

The product of its digits is 2032128, while the sum is 55.

The square root of 288997147 is about 16999.9160880282. The cubic root of 288997147 is about 661.1467262241.

It can be divided in two parts, 28899 and 7147, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 288997147 in words is "two hundred eighty-eight million, nine hundred ninety-seven thousand, one hundred forty-seven".