256311546 has 16 divisors (see below), whose sum is σ = 512841024. Its totient is φ = 85400864.

The previous prime is 256311521. The next prime is 256311547. The reversal of 256311546 is 645113652.

256311546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256311546² = 131391217225820232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256311547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8971 + ... + 24353.

It is an arithmetic number, because the mean of its divisors is an integer number (32052564).

Almost surely, 2^256311546 is an apocalyptic number.

256311546 is an abundant number, since it is smaller than the sum of its proper divisors (256529478).

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

256311546 is a wasteful number, since it uses less digits than its factorization.

256311546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18165.

The product of its digits is 21600, while the sum is 33.

The square root of 256311546 is about 16009.7328522371. The cubic root of 256311546 is about 635.2178936861.

The spelling of 256311546 in words is "two hundred fifty-six million, three hundred eleven thousand, five hundred forty-six".