288263978 has 16 divisors (see below), whose sum is σ = 447023616. Its totient is φ = 139270320.

The previous prime is 288263977. The next prime is 288263981. The reversal of 288263978 is 879362882.

It is a super-2 number, since 2×288263978² = 166192242024768968, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (288263977) 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, 42275 + ... + 48617.

It is an arithmetic number, because the mean of its divisors is an integer number (27938976).

Almost surely, 2^288263978 is an apocalyptic number.

288263978 is a deficient number, since it is larger than the sum of its proper divisors (158759638).

288263978 is a wasteful number, since it uses less digits than its factorization.

288263978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109.

The product of its digits is 2322432, while the sum is 53.

The square root of 288263978 is about 16978.3384935040. The cubic root of 288263978 is about 660.5871557918.

The spelling of 288263978 in words is "two hundred eighty-eight million, two hundred sixty-three thousand, nine hundred seventy-eight".