30521214 has 12 divisors (see below), whose sum is σ = 66129336. Its totient is φ = 10173732.

The previous prime is 30521209. The next prime is 30521243. The reversal of 30521214 is 41212503.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1695623 = 30521214 / (3 + 0 + 5 + 2 + 1 + 2 + 1 + 4).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 847794 + ... + 847829.

It is an arithmetic number, because the mean of its divisors is an integer number (5510778).

Almost surely, 2^30521214 is an apocalyptic number.

30521214 is an abundant number, since it is smaller than the sum of its proper divisors (35608122).

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

30521214 is a wasteful number, since it uses less digits than its factorization.

30521214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695631 (or 1695628 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30521214 is about 5524.6008000579. The cubic root of 30521214 is about 312.5124099605.

Adding to 30521214 its reverse (41212503), we get a palindrome (71733717).

The spelling of 30521214 in words is "thirty million, five hundred twenty-one thousand, two hundred fourteen".