285522730 has 8 divisors (see below), whose sum is σ = 513940932. Its totient is φ = 114209088.

The previous prime is 285522703. The next prime is 285522749. The reversal of 285522730 is 37225582.

It can be written as a sum of positive squares in 2 ways, for example, as 259113409 + 26409321 = 16097^2 + 5139^2 .

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

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, 14276127 + ... + 14276146.

Almost surely, 2^285522730 is an apocalyptic number.

285522730 is a deficient number, since it is larger than the sum of its proper divisors (228418202).

285522730 is a wasteful number, since it uses less digits than its factorization.

285522730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28552280.

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

The square root of 285522730 is about 16897.4178500740. The cubic root of 285522730 is about 658.4865305317.

The spelling of 285522730 in words is "two hundred eighty-five million, five hundred twenty-two thousand, seven hundred thirty".