30430340 has 24 divisors (see below), whose sum is σ = 67663512. Its totient is φ = 11456000.

The previous prime is 30430339. The next prime is 30430349. The reversal of 30430340 is 4303403.

It can be written as a sum of positive squares in 4 ways, for example, as 16532356 + 13897984 = 4066^2 + 3728^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (30430349) 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, 44411 + ... + 45090.

It is an arithmetic number, because the mean of its divisors is an integer number (2819313).

Almost surely, 2^30430340 is an apocalyptic number.

It is an amenable number.

30430340 is an abundant number, since it is smaller than the sum of its proper divisors (37233172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30430340 is a wasteful number, since it uses less digits than its factorization.

30430340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89527 (or 89525 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 30430340 is about 5516.3701833724. The cubic root of 30430340 is about 312.2019430089.

Adding to 30430340 its reverse (4303403), we get a palindrome (34733743).

The spelling of 30430340 in words is "thirty million, four hundred thirty thousand, three hundred forty".