256828828652 has 72 divisors (see below), whose sum is σ = 533552585328. Its totient is φ = 107193241600.

The previous prime is 256828828643. The next prime is 256828828657.

256828828652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256828828652² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256828828657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275048 + ... + 767664.

It is an arithmetic number, because the mean of its divisors is an integer number (7410452574).

Almost surely, 2^256828828652 is an apocalyptic number.

256828828652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256828828652 is an abundant number, since it is smaller than the sum of its proper divisors (276723756676).

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

256828828652 is a wasteful number, since it uses less digits than its factorization.

256828828652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492707 (or 492688 counting only the distinct ones).

The product of its digits is 58982400, while the sum is 62.

The spelling of 256828828652 in words is "two hundred fifty-six billion, eight hundred twenty-eight million, eight hundred twenty-eight thousand, six hundred fifty-two".