289942648 has 32 divisors (see below), whose sum is σ = 555498000. Its totient is φ = 141826048.

The previous prime is 289942643. The next prime is 289942657. The reversal of 289942648 is 846249982.

It is a junction number, because it is equal to n+sod(n) for n = 289942595 and 289942604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289942643) by changing a digit.

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, 189615 + ... + 191137.

Almost surely, 2^289942648 is an apocalyptic number.

It is an amenable number.

289942648 is a deficient number, since it is larger than the sum of its proper divisors (265555352).

289942648 is a wasteful number, since it uses less digits than its factorization.

289942648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2027 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The square root of 289942648 is about 17027.7023699617. The cubic root of 289942648 is about 661.8669575621.

The spelling of 289942648 in words is "two hundred eighty-nine million, nine hundred forty-two thousand, six hundred forty-eight".