212891648 has 24 divisors (see below), whose sum is σ = 425683440. Its totient is φ = 106444800.

The previous prime is 212891641. The next prime is 212891659. The reversal of 212891648 is 846198212.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212891641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49928 + ... + 54023.

It is an arithmetic number, because the mean of its divisors is an integer number (17736810).

Almost surely, 2^212891648 is an apocalyptic number.

It is an amenable number.

212891648 is a deficient number, since it is larger than the sum of its proper divisors (212791792).

212891648 is an equidigital number, since it uses as much as digits as its factorization.

212891648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103973 (or 103953 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 212891648 is about 14590.8069687732. The cubic root of 212891648 is about 597.1079790509.

The spelling of 212891648 in words is "two hundred twelve million, eight hundred ninety-one thousand, six hundred forty-eight".