385249736 has 16 divisors (see below), whose sum is σ = 722587740. Its totient is φ = 192559680.

The previous prime is 385249691. The next prime is 385249751. The reversal of 385249736 is 637942583.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 373648900 + 11600836 = 19330^2 + 3406^2 .

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, 24806 + ... + 37226.

Almost surely, 2^385249736 is an apocalyptic number.

It is an amenable number.

385249736 is a deficient number, since it is larger than the sum of its proper divisors (337338004).

385249736 is a wasteful number, since it uses less digits than its factorization.

385249736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16304 (or 16300 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 385249736 is about 19627.7797012296. The cubic root of 385249736 is about 727.6358975076.

The spelling of 385249736 in words is "three hundred eighty-five million, two hundred forty-nine thousand, seven hundred thirty-six".