30390612 has 24 divisors (see below), whose sum is σ = 81041856. Its totient is φ = 8683008.

The previous prime is 30390539. The next prime is 30390629. The reversal of 30390612 is 21609303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180813 + ... + 180980.

It is an arithmetic number, because the mean of its divisors is an integer number (3376744).

Almost surely, 2^30390612 is an apocalyptic number.

It is an amenable number.

30390612 is an abundant number, since it is smaller than the sum of its proper divisors (50651244).

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

30390612 is a wasteful number, since it uses less digits than its factorization.

30390612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361807 (or 361805 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30390612 is about 5512.7680887191. The cubic root of 30390612 is about 312.0660198884.

Adding to 30390612 its reverse (21609303), we get a palindrome (51999915).

The spelling of 30390612 in words is "thirty million, three hundred ninety thousand, six hundred twelve".