30643214 has 32 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 12279168.

The previous prime is 30643213. The next prime is 30643241. The reversal of 30643214 is 41234603.

30643214 = 562² + 563² + ... + 645².

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30643214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30643213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47039 + ... + 47685.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^30643214 is an apocalyptic number.

30643214 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30643214 is a deficient number, since it is larger than the sum of its proper divisors (25343986).

30643214 is a wasteful number, since it uses less digits than its factorization.

30643214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 30643214 is about 5535.6313099772. The cubic root of 30643214 is about 312.9282499782.

Adding to 30643214 its reverse (41234603), we get a palindrome (71877817).

The spelling of 30643214 in words is "thirty million, six hundred forty-three thousand, two hundred fourteen".