30005380 has 12 divisors (see below), whose sum is σ = 63011340. Its totient is φ = 12002144.

The previous prime is 30005377. The next prime is 30005387. The reversal of 30005380 is 8350003.

It can be written as a sum of positive squares in 2 ways, for example, as 20358144 + 9647236 = 4512^2 + 3106^2 .

It is not an unprimeable number, because it can be changed into a prime (30005387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750115 + ... + 750154.

It is an arithmetic number, because the mean of its divisors is an integer number (5250945).

Almost surely, 2^30005380 is an apocalyptic number.

It is an amenable number.

30005380 is an abundant number, since it is smaller than the sum of its proper divisors (33005960).

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

30005380 is a wasteful number, since it uses less digits than its factorization.

30005380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500278 (or 1500276 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30005380 is about 5477.7166775948. The cubic root of 30005380 is about 310.7418238306.

Adding to 30005380 its reverse (8350003), we get a palindrome (38355383).

The spelling of 30005380 in words is "thirty million, five thousand, three hundred eighty".