30212146 has 4 divisors (see below), whose sum is σ = 45318222. Its totient is φ = 15106072.

The previous prime is 30212131. The next prime is 30212153. The reversal of 30212146 is 64121203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 6446521 = 4875^2 + 2539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7553035 + ... + 7553038.

Almost surely, 2^30212146 is an apocalyptic number.

30212146 is a deficient number, since it is larger than the sum of its proper divisors (15106076).

30212146 is a wasteful number, since it uses less digits than its factorization.

30212146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15106075.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30212146 is about 5496.5576500206. The cubic root of 30212146 is about 311.4539608200.

Adding to 30212146 its reverse (64121203), we get a palindrome (94333349).

The spelling of 30212146 in words is "thirty million, two hundred twelve thousand, one hundred forty-six".