256410436 has 6 divisors (see below), whose sum is σ = 448718270. Its totient is φ = 128205216.

The previous prime is 256410421. The next prime is 256410443. The reversal of 256410436 is 634014652.

It can be written as a sum of positive squares in only one way, i.e., 160174336 + 96236100 = 12656^2 + 9810^2 .

It is a junction number, because it is equal to n+sod(n) for n = 256410398 and 256410407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32051301 + ... + 32051308.

Almost surely, 2^256410436 is an apocalyptic number.

It is an amenable number.

256410436 is a deficient number, since it is larger than the sum of its proper divisors (192307834).

256410436 is a wasteful number, since it uses less digits than its factorization.

256410436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64102613 (or 64102611 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 256410436 is about 16012.8209881957. The cubic root of 256410436 is about 635.2995763383.

The spelling of 256410436 in words is "two hundred fifty-six million, four hundred ten thousand, four hundred thirty-six".