30385449 has 14 divisors (see below), whose sum is σ = 45558426. Its totient is φ = 20256480.

The previous prime is 30385423. The next prime is 30385451. The reversal of 30385449 is 94458303.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 1225449 = 5400^2 + 1107^2 .

It is not a de Polignac number, because 30385449 - 2¹² = 30381353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30385489) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 20112 + ... + 21569.

Almost surely, 2^30385449 is an apocalyptic number.

It is an amenable number.

30385449 is a deficient number, since it is larger than the sum of its proper divisors (15172977).

30385449 is an frugal number, since it uses more digits than its factorization.

30385449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41699 (or 41684 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 30385449 is about 5512.2997922827. The cubic root of 30385449 is about 312.0483467978.

Adding to 30385449 its product of nonzero digits (51840), we get a square (30437289 = 5517²).

The spelling of 30385449 in words is "thirty million, three hundred eighty-five thousand, four hundred forty-nine".