212189948 has 12 divisors (see below), whose sum is σ = 390876360. Its totient is φ = 100510992.

The previous prime is 212189941. The next prime is 212189951. The reversal of 212189948 is 849981212.

It is a junction number, because it is equal to n+sod(n) for n = 212189899 and 212189908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212189941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395911 + ... + 1396062.

It is an arithmetic number, because the mean of its divisors is an integer number (32573030).

Almost surely, 2^212189948 is an apocalyptic number.

It is an amenable number.

212189948 is a deficient number, since it is larger than the sum of its proper divisors (178686412).

212189948 is a wasteful number, since it uses less digits than its factorization.

212189948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791996 (or 2791994 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 212189948 is about 14566.7411592298. The cubic root of 212189948 is about 596.4512257921.

The spelling of 212189948 in words is "two hundred twelve million, one hundred eighty-nine thousand, nine hundred forty-eight".