288391982 has 16 divisors (see below), whose sum is σ = 437778000. Its totient is φ = 142473600.

The previous prime is 288391973. The next prime is 288391993. The reversal of 288391982 is 289193882.

It is a self number, because there is not a number n which added to its sum of digits gives 288391982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85769 + ... + 89067.

It is an arithmetic number, because the mean of its divisors is an integer number (27361125).

Almost surely, 2^288391982 is an apocalyptic number.

288391982 is a deficient number, since it is larger than the sum of its proper divisors (149386018).

288391982 is a wasteful number, since it uses less digits than its factorization.

288391982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811.

The product of its digits is 497664, while the sum is 50.

The square root of 288391982 is about 16982.1077019315. The cubic root of 288391982 is about 660.6849195221.

The spelling of 288391982 in words is "two hundred eighty-eight million, three hundred ninety-one thousand, nine hundred eighty-two".