288640372 has 6 divisors (see below), whose sum is σ = 505120658. Its totient is φ = 144320184.

The previous prime is 288640351. The next prime is 288640379. The reversal of 288640372 is 273046882.

It can be written as a sum of positive squares in only one way, i.e., 210424036 + 78216336 = 14506^2 + 8844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288640379) 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 as a sum of consecutive naturals, namely, 36080043 + ... + 36080050.

Almost surely, 2^288640372 is an apocalyptic number.

It is an amenable number.

288640372 is a deficient number, since it is larger than the sum of its proper divisors (216480286).

288640372 is a wasteful number, since it uses less digits than its factorization.

288640372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72160097 (or 72160095 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 288640372 is about 16989.4194132701. The cubic root of 288640372 is about 660.8745461935.

The spelling of 288640372 in words is "two hundred eighty-eight million, six hundred forty thousand, three hundred seventy-two".