385304530 has 16 divisors (see below), whose sum is σ = 746898264. Its totient is φ = 142266240.

The previous prime is 385304501. The next prime is 385304531. The reversal of 385304530 is 35403583.

It can be written as a sum of positive squares in 4 ways, for example, as 284563161 + 100741369 = 16869^2 + 10037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 385304492 and 385304501.

It is not an unprimeable number, because it can be changed into a prime (385304531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481811 + ... + 1482070.

Almost surely, 2^385304530 is an apocalyptic number.

385304530 is a deficient number, since it is larger than the sum of its proper divisors (361593734).

385304530 is a wasteful number, since it uses less digits than its factorization.

385304530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963901.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 385304530 is about 19629.1754793725. The cubic root of 385304530 is about 727.6703930461.

The spelling of 385304530 in words is "three hundred eighty-five million, three hundred four thousand, five hundred thirty".