256846470 has 96 divisors (see below), whose sum is σ = 652043520. Its totient is φ = 64728000.

The previous prime is 256846463. The next prime is 256846477. The reversal of 256846470 is 74648652.

It is an interprime number because it is at equal distance from previous prime (256846463) and next prime (256846477).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256846477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1700895 + ... + 1701045.

It is an arithmetic number, because the mean of its divisors is an integer number (6792120).

Almost surely, 2^256846470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256846470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326021760).

256846470 is an abundant number, since it is smaller than the sum of its proper divisors (395197050).

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

256846470 is a wasteful number, since it uses less digits than its factorization.

256846470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 256846470 is about 16026.4303573815. The cubic root of 256846470 is about 635.6594880295.

The spelling of 256846470 in words is "two hundred fifty-six million, eight hundred forty-six thousand, four hundred seventy".