256210078 has 8 divisors (see below), whose sum is σ = 384422760. Its totient is φ = 128069160.

The previous prime is 256210069. The next prime is 256210081. The reversal of 256210078 is 870012652.

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

It is a congruent number.

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, 7888 + ... + 23971.

It is an arithmetic number, because the mean of its divisors is an integer number (48052845).

Almost surely, 2^256210078 is an apocalyptic number.

256210078 is a deficient number, since it is larger than the sum of its proper divisors (128212682).

256210078 is a wasteful number, since it uses less digits than its factorization.

256210078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35882.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 256210078 is about 16006.5635912272. The cubic root of 256210078 is about 635.1340597771.

The spelling of 256210078 in words is "two hundred fifty-six million, two hundred ten thousand, seventy-eight".