212247628 has 6 divisors (see below), whose sum is σ = 371433356. Its totient is φ = 106123812.

The previous prime is 212247619. The next prime is 212247631. The reversal of 212247628 is 826742212.

It is a junction number, because it is equal to n+sod(n) for n = 212247593 and 212247602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26530950 + ... + 26530957.

Almost surely, 2^212247628 is an apocalyptic number.

It is an amenable number.

212247628 is a deficient number, since it is larger than the sum of its proper divisors (159185728).

212247628 is a wasteful number, since it uses less digits than its factorization.

212247628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53061911 (or 53061909 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 212247628 is about 14568.7208772768. The cubic root of 212247628 is about 596.5052657222.

The spelling of 212247628 in words is "two hundred twelve million, two hundred forty-seven thousand, six hundred twenty-eight".