331776256 has 54 divisors (see below), whose sum is σ = 770409150. Its totient is φ = 142184448.

The previous prime is 331776241. The next prime is 331776257. The reversal of 331776256 is 652677133.

It can be written as a sum of positive squares in only one way, i.e., 218566656 + 113209600 = 14784^2 + 10640^2 .

It is a super-2 number, since 2×331776256² = 220150968090755072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331776257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 681 + ... + 25768.

Almost surely, 2^331776256 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 331776256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385204575).

331776256 is an abundant number, since it is smaller than the sum of its proper divisors (438632894).

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

331776256 is an equidigital number, since it uses as much as digits as its factorization.

331776256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26479 (or 26458 counting only the distinct ones).

The product of its digits is 158760, while the sum is 40.

The square root of 331776256 is about 18214.7263498522. The cubic root of 331776256 is about 692.2799718030.

It can be divided in two parts, 331776 and 256, that multiplied together give a 4-th power (84934656 = 96⁴).

The spelling of 331776256 in words is "three hundred thirty-one million, seven hundred seventy-six thousand, two hundred fifty-six".