289406656 has 56 divisors (see below), whose sum is σ = 716011776. Its totient is φ = 112753920.

The previous prime is 289406639. The next prime is 289406671. The reversal of 289406656 is 656604982.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24436 + ... + 34291.

Almost surely, 2^289406656 is an apocalyptic number.

It is an amenable number.

289406656 is an abundant number, since it is smaller than the sum of its proper divisors (426605120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289406656 is a wasteful number, since it uses less digits than its factorization.

289406656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58757 (or 58747 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 289406656 is about 17011.9562661088. The cubic root of 289406656 is about 661.4588605086.

The spelling of 289406656 in words is "two hundred eighty-nine million, four hundred six thousand, six hundred fifty-six".