288640373 has 4 divisors (see below), whose sum is σ = 329874720. Its totient is φ = 247406028.

The previous prime is 288640351. The next prime is 288640379. The reversal of 288640373 is 373046882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 288640373 - 2⁶ = 288640309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 288640373.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20617163 + ... + 20617176.

It is an arithmetic number, because the mean of its divisors is an integer number (82468680).

Almost surely, 2^288640373 is an apocalyptic number.

It is an amenable number.

288640373 is a deficient number, since it is larger than the sum of its proper divisors (41234347).

288640373 is an equidigital number, since it uses as much as digits as its factorization.

288640373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41234346.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 288640373 is about 16989.4194427002. The cubic root of 288640373 is about 660.8745469567.

The spelling of 288640373 in words is "two hundred eighty-eight million, six hundred forty thousand, three hundred seventy-three".