857730130 has 8 divisors (see below), whose sum is σ = 1543914252. Its totient is φ = 343092048.

The previous prime is 857730109. The next prime is 857730149. The reversal of 857730130 is 31037758.

It can be written as a sum of positive squares in 2 ways, for example, as 820994409 + 36735721 = 28653^2 + 6061^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42886497 + ... + 42886516.

Almost surely, 2^857730130 is an apocalyptic number.

857730130 is a deficient number, since it is larger than the sum of its proper divisors (686184122).

857730130 is a wasteful number, since it uses less digits than its factorization.

857730130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85773020.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 857730130 is about 29287.0300645183. The cubic root of 857730130 is about 950.1311471760.

Adding to 857730130 its reverse (31037758), we get a palindrome (888767888).

The spelling of 857730130 in words is "eight hundred fifty-seven million, seven hundred thirty thousand, one hundred thirty".