256962028740 has 96 divisors (see below), whose sum is σ = 728126340480. Its totient is φ = 67705936896.

The previous prime is 256962028699. The next prime is 256962028753. The reversal of 256962028740 is 47820269652.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609984 + ... + 1762376.

It is an arithmetic number, because the mean of its divisors is an integer number (7584649380).

Almost surely, 2^256962028740 is an apocalyptic number.

256962028740 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 256962028740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364063170240).

256962028740 is an abundant number, since it is smaller than the sum of its proper divisors (471164311740).

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

256962028740 is a wasteful number, since it uses less digits than its factorization.

256962028740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152741 (or 152739 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 256962028740 in words is "two hundred fifty-six billion, nine hundred sixty-two million, twenty-eight thousand, seven hundred forty".