1768428680 has 32 divisors (see below), whose sum is σ = 3981576600. Its totient is φ = 706907136.

The previous prime is 1768428661. The next prime is 1768428703. The reversal of 1768428680 is 868248671.

It can be written as a sum of positive squares in 4 ways, for example, as 1043419204 + 725009476 = 32302^2 + 26926^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 50816 + ... + 78224.

Almost surely, 2^1768428680 is an apocalyptic number.

1768428680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1768428680 is an abundant number, since it is smaller than the sum of its proper divisors (2213147920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1768428680 is a wasteful number, since it uses less digits than its factorization.

1768428680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29033 (or 29029 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 1768428680 is about 42052.6893313614. The cubic root of 1768428680 is about 1209.2864403811.

Subtracting from 1768428680 its reverse (868248671), we obtain a square (900180009 = 30003²).

It can be divided in two parts, 17684 and 28680, that added together give a palindrome (46364).

The spelling of 1768428680 in words is "one billion, seven hundred sixty-eight million, four hundred twenty-eight thousand, six hundred eighty".