256061310 has 32 divisors (see below), whose sum is σ = 650698272. Its totient is φ = 64266240.

The previous prime is 256061263. The next prime is 256061317. The reversal of 256061310 is 13160652.

It is a super-2 number, since 2×256061310² = 131134788957832200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256061317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250531 + ... + 251550.

It is an arithmetic number, because the mean of its divisors is an integer number (20334321).

Almost surely, 2^256061310 is an apocalyptic number.

256061310 is an abundant number, since it is smaller than the sum of its proper divisors (394636962).

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

256061310 is a wasteful number, since it uses less digits than its factorization.

256061310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502108.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 256061310 is about 16001.9158228007. The cubic root of 256061310 is about 635.0111060946.

The spelling of 256061310 in words is "two hundred fifty-six million, sixty-one thousand, three hundred ten".