288420189 has 8 divisors (see below), whose sum is σ = 386863680. Its totient is φ = 191128416.

The previous prime is 288420179. The next prime is 288420227. The reversal of 288420189 is 981024882.

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

It is not a de Polignac number, because 288420189 - 2⁸ = 288419933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 288420189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288420149) 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, 287344 + ... + 288345.

It is an arithmetic number, because the mean of its divisors is an integer number (48357960).

Almost surely, 2^288420189 is an apocalyptic number.

It is an amenable number.

288420189 is a deficient number, since it is larger than the sum of its proper divisors (98443491).

288420189 is a wasteful number, since it uses less digits than its factorization.

288420189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575859.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 288420189 is about 16982.9381733550. The cubic root of 288420189 is about 660.7064588773.

The spelling of 288420189 in words is "two hundred eighty-eight million, four hundred twenty thousand, one hundred eighty-nine".