256969652 has 12 divisors (see below), whose sum is σ = 458182116. Its totient is φ = 126060480.

The previous prime is 256969649. The next prime is 256969679.

256969652 is nontrivially palindromic in base 10.

256969652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127328656 + 129640996 = 11284^2 + 11386^2 .

It is a super-2 number, since 2×256969652² = 132066804098002208, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256969652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605849 + ... + 606272.

It is an arithmetic number, because the mean of its divisors is an integer number (38181843).

Almost surely, 2^256969652 is an apocalyptic number.

It is an amenable number.

256969652 is a deficient number, since it is larger than the sum of its proper divisors (201212464).

256969652 is a wasteful number, since it uses less digits than its factorization.

256969652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212178 (or 1212176 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 50.

The square root of 256969652 is about 16030.2729858228. The cubic root of 256969652 is about 635.7610912592.

The spelling of 256969652 in words is "two hundred fifty-six million, nine hundred sixty-nine thousand, six hundred fifty-two".