288399838 has 8 divisors (see below), whose sum is σ = 447517080. Its totient is φ = 139227480.

The previous prime is 288399833. The next prime is 288399869. The reversal of 288399838 is 838993882.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 4972411 = 288399838 / (2 + 8 + 8 + 3 + 9 + 9 + 8 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288399833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2486148 + ... + 2486263.

It is an arithmetic number, because the mean of its divisors is an integer number (55939635).

Almost surely, 2^288399838 is an apocalyptic number.

288399838 is a deficient number, since it is larger than the sum of its proper divisors (159117242).

288399838 is a wasteful number, since it uses less digits than its factorization.

288399838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972442.

The product of its digits is 5971968, while the sum is 58.

The square root of 288399838 is about 16982.3390026227. The cubic root of 288399838 is about 660.6909186413.

The spelling of 288399838 in words is "two hundred eighty-eight million, three hundred ninety-nine thousand, eight hundred thirty-eight".