30412520 has 32 divisors (see below), whose sum is σ = 70281000. Its totient is φ = 11835648.

The previous prime is 30412489. The next prime is 30412523. The reversal of 30412520 is 2521403.

It can be written as a sum of positive squares in 4 ways, for example, as 30184036 + 228484 = 5494^2 + 478^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30412523) 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 7 ways as a sum of consecutive naturals, for example, 8795 + ... + 11754.

Almost surely, 2^30412520 is an apocalyptic number.

It is an amenable number.

30412520 is an abundant number, since it is smaller than the sum of its proper divisors (39868480).

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

30412520 is a wasteful number, since it uses less digits than its factorization.

30412520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20597 (or 20593 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30412520 is about 5514.7547542932. The cubic root of 30412520 is about 312.1409893142.

Adding to 30412520 its reverse (2521403), we get a palindrome (32933923).

The spelling of 30412520 in words is "thirty million, four hundred twelve thousand, five hundred twenty".