285740530 has 8 divisors (see below), whose sum is σ = 514332972. Its totient is φ = 114296208.

The previous prime is 285740519. The next prime is 285740561. The reversal of 285740530 is 35047582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 284293321 + 1447209 = 16861^2 + 1203^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14287017 + ... + 14287036.

Almost surely, 2^285740530 is an apocalyptic number.

285740530 is a deficient number, since it is larger than the sum of its proper divisors (228592442).

285740530 is a wasteful number, since it uses less digits than its factorization.

285740530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28574060.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 285740530 is about 16903.8613931847. The cubic root of 285740530 is about 658.6539216588.

The spelling of 285740530 in words is "two hundred eighty-five million, seven hundred forty thousand, five hundred thirty".