1268628436 has 12 divisors (see below), whose sum is σ = 2220365812. Its totient is φ = 634238208.

The previous prime is 1268628421. The next prime is 1268628481. The reversal of 1268628436 is 6348268621.

It can be written as a sum of positive squares in 2 ways, for example, as 548028100 + 720600336 = 23410^2 + 26844^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36676 + ... + 62308.

Almost surely, 2^1268628436 is an apocalyptic number.

It is an amenable number.

1268628436 is a deficient number, since it is larger than the sum of its proper divisors (951737376).

1268628436 is a wasteful number, since it uses less digits than its factorization.

1268628436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38010 (or 38008 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 1268628436 is about 35617.8106570294. The cubic root of 1268628436 is about 1082.5421470717.

The spelling of 1268628436 in words is "one billion, two hundred sixty-eight million, six hundred twenty-eight thousand, four hundred thirty-six".