288639796 has 12 divisors (see below), whose sum is σ = 510327748. Its totient is φ = 142831872.

The previous prime is 288639781. The next prime is 288639797. The reversal of 288639796 is 697936882.

It can be written as a sum of positive squares in 2 ways, for example, as 123876900 + 164762896 = 11130^2 + 12836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 288639796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288639797) 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, 371571 + ... + 372346.

Almost surely, 2^288639796 is an apocalyptic number.

It is an amenable number.

288639796 is a deficient number, since it is larger than the sum of its proper divisors (221687952).

288639796 is a wasteful number, since it uses less digits than its factorization.

288639796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744018 (or 744016 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The square root of 288639796 is about 16989.4024615347. The cubic root of 288639796 is about 660.8741065876.

The spelling of 288639796 in words is "two hundred eighty-eight million, six hundred thirty-nine thousand, seven hundred ninety-six".