75780130 has 8 divisors (see below), whose sum is σ = 136404252. Its totient is φ = 30312048.

The previous prime is 75780127. The next prime is 75780137. The reversal of 75780130 is 3108757.

It can be written as a sum of positive squares in 2 ways, for example, as 75394489 + 385641 = 8683^2 + 621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 75780092 and 75780101.

It is not an unprimeable number, because it can be changed into a prime (75780137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3788997 + ... + 3789016.

Almost surely, 2^75780130 is an apocalyptic number.

75780130 is a deficient number, since it is larger than the sum of its proper divisors (60624122).

75780130 is a wasteful number, since it uses less digits than its factorization.

75780130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578020.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 75780130 is about 8705.1783439514. The cubic root of 75780130 is about 423.1734855751.

Adding to 75780130 its reverse (3108757), we get a palindrome (78888887).

The spelling of 75780130 in words is "seventy-five million, seven hundred eighty thousand, one hundred thirty".