256434360 has 256 divisors, whose sum is σ = 988968960. Its totient is φ = 51701760.

The previous prime is 256434359. The next prime is 256434389. The reversal of 256434360 is 63434652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 250650 + ... + 251670.

It is an arithmetic number, because the mean of its divisors is an integer number (3863160).

Almost surely, 2^256434360 is an apocalyptic number.

256434360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256434360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494484480).

256434360 is an abundant number, since it is smaller than the sum of its proper divisors (732534600).

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

256434360 is a wasteful number, since it uses less digits than its factorization.

256434360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 256434360 is about 16013.5679971704. The cubic root of 256434360 is about 635.3193342891.

It can be divided in two parts, 25643 and 4360, that added together give a palindrome (30003).

The spelling of 256434360 in words is "two hundred fifty-six million, four hundred thirty-four thousand, three hundred sixty".