212247408 has 40 divisors (see below), whose sum is σ = 549929088. Its totient is φ = 70539712.

The previous prime is 212247403. The next prime is 212247419. The reversal of 212247408 is 804742212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212247403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10285 + ... + 23027.

Almost surely, 2^212247408 is an apocalyptic number.

It is an amenable number.

212247408 is an abundant number, since it is smaller than the sum of its proper divisors (337681680).

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

212247408 is a wasteful number, since it uses less digits than its factorization.

212247408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13101 (or 13095 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 212247408 is about 14568.7133268522. The cubic root of 212247408 is about 596.5050596246.

The spelling of 212247408 in words is "two hundred twelve million, two hundred forty-seven thousand, four hundred eight".