256988002 has 8 divisors (see below), whose sum is σ = 386034012. Its totient is φ = 128310000.

The previous prime is 256987981. The next prime is 256988029. The reversal of 256988002 is 200889652.

256988002 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 242767561 + 14220441 = 15581^2 + 3771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90249 + ... + 93052.

Almost surely, 2^256988002 is an apocalyptic number.

256988002 is a deficient number, since it is larger than the sum of its proper divisors (129046010).

256988002 is a wasteful number, since it uses less digits than its factorization.

256988002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184004.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 256988002 is about 16030.8453301752. The cubic root of 256988002 is about 635.7762239649.

The spelling of 256988002 in words is "two hundred fifty-six million, nine hundred eighty-eight thousand, two".