256064730 has 32 divisors (see below), whose sum is σ = 626154624. Its totient is φ = 66995136.

The previous prime is 256064701. The next prime is 256064797. The reversal of 256064730 is 37460652.

It is a junction number, because it is equal to n+sod(n) for n = 256064691 and 256064700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78934 + ... + 82113.

It is an arithmetic number, because the mean of its divisors is an integer number (19567332).

Almost surely, 2^256064730 is an apocalyptic number.

256064730 is an abundant number, since it is smaller than the sum of its proper divisors (370089894).

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

256064730 is a wasteful number, since it uses less digits than its factorization.

256064730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161110.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 256064730 is about 16002.0226846483. The cubic root of 256064730 is about 635.0139331888.

The spelling of 256064730 in words is "two hundred fifty-six million, sixty-four thousand, seven hundred thirty".