1290578768 has 20 divisors (see below), whose sum is σ = 2504893248. Its totient is φ = 644154720.

The previous prime is 1290578747. The next prime is 1290578777. The reversal of 1290578768 is 8678750921.

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, 61496 + ... + 79767.

Almost surely, 2^1290578768 is an apocalyptic number.

It is an amenable number.

1290578768 is a deficient number, since it is larger than the sum of its proper divisors (1214314480).

1290578768 is a wasteful number, since it uses less digits than its factorization.

1290578768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141842 (or 141836 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 53.

The square root of 1290578768 is about 35924.6262054318. The cubic root of 1290578768 is about 1088.7500100047.

The spelling of 1290578768 in words is "one billion, two hundred ninety million, five hundred seventy-eight thousand, seven hundred sixty-eight".