212347628 has 12 divisors (see below), whose sum is σ = 384422640. Its totient is φ = 102512592.

The previous prime is 212347607. The next prime is 212347637. The reversal of 212347628 is 826743212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915176 + ... + 915407.

It is an arithmetic number, because the mean of its divisors is an integer number (32035220).

Almost surely, 2^212347628 is an apocalyptic number.

It is an amenable number.

212347628 is a deficient number, since it is larger than the sum of its proper divisors (172075012).

212347628 is a wasteful number, since it uses less digits than its factorization.

212347628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830616 (or 1830614 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 212347628 is about 14572.1524834185. The cubic root of 212347628 is about 596.5989317253.

The spelling of 212347628 in words is "two hundred twelve million, three hundred forty-seven thousand, six hundred twenty-eight".