30212438 has 8 divisors (see below), whose sum is σ = 46173888. Its totient is φ = 14821144.

The previous prime is 30212431. The next prime is 30212453. The reversal of 30212438 is 83421203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212431) 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, 142406 + ... + 142617.

It is an arithmetic number, because the mean of its divisors is an integer number (5771736).

Almost surely, 2^30212438 is an apocalyptic number.

30212438 is a deficient number, since it is larger than the sum of its proper divisors (15961450).

30212438 is a wasteful number, since it uses less digits than its factorization.

30212438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285078.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30212438 is about 5496.5842120357. The cubic root of 30212438 is about 311.4549642163.

The spelling of 30212438 in words is "thirty million, two hundred twelve thousand, four hundred thirty-eight".