288281961 has 24 divisors (see below), whose sum is σ = 454842336. Its totient is φ = 174493440.

The previous prime is 288281957. The next prime is 288282013. The reversal of 288281961 is 169182882.

It is a happy number.

288281961 is a `hidden beast` number, since 288 + 281 + 96 + 1 = 666.

It is not a de Polignac number, because 288281961 - 2² = 288281957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (288282961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109881 + ... + 112473.

It is an arithmetic number, because the mean of its divisors is an integer number (18951764).

Almost surely, 2^288281961 is an apocalyptic number.

It is an amenable number.

288281961 is a deficient number, since it is larger than the sum of its proper divisors (166560375).

288281961 is a wasteful number, since it uses less digits than its factorization.

288281961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733 (or 3730 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 288281961 is about 16978.8680718121. The cubic root of 288281961 is about 660.6008921501.

The spelling of 288281961 in words is "two hundred eighty-eight million, two hundred eighty-one thousand, nine hundred sixty-one".