256763276 has 48 divisors (see below), whose sum is σ = 575377152. Its totient is φ = 97329600.

The previous prime is 256763263. The next prime is 256763281. The reversal of 256763276 is 672367652.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an alternating number because its digits alternate between even and odd.

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, 131 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (11987024).

Almost surely, 2^256763276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256763276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287688576).

256763276 is an abundant number, since it is smaller than the sum of its proper divisors (318613876).

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

256763276 is a wasteful number, since it uses less digits than its factorization.

256763276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22590 (or 22588 counting only the distinct ones).

The product of its digits is 635040, while the sum is 44.

The square root of 256763276 is about 16023.8346222120. The cubic root of 256763276 is about 635.5908494038.

The spelling of 256763276 in words is "two hundred fifty-six million, seven hundred sixty-three thousand, two hundred seventy-six".