1236490768 has 20 divisors (see below), whose sum is σ = 2417683180. Its totient is φ = 612572544.

The previous prime is 1236490729. The next prime is 1236490771. The reversal of 1236490768 is 8670946321.

It can be written as a sum of positive squares in 2 ways, for example, as 364351744 + 872139024 = 19088^2 + 29532^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352755 + ... + 356242.

It is an arithmetic number, because the mean of its divisors is an integer number (120884159).

Almost surely, 2^1236490768 is an apocalyptic number.

It is an amenable number.

1236490768 is a deficient number, since it is larger than the sum of its proper divisors (1181192412).

1236490768 is a wasteful number, since it uses less digits than its factorization.

1236490768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709114 (or 709108 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1236490768 is about 35163.7706738057. The cubic root of 1236490768 is about 1073.3226462250.

The spelling of 1236490768 in words is "one billion, two hundred thirty-six million, four hundred ninety thousand, seven hundred sixty-eight".