212506192 has 10 divisors (see below), whose sum is σ = 411730778. Its totient is φ = 106253088.

The previous prime is 212506187. The next prime is 212506193. The reversal of 212506192 is 291605212.

It can be written as a sum of positive squares in only one way, i.e., 146506816 + 65999376 = 12104^2 + 8124^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 212506192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212506193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640803 + ... + 6640834.

Almost surely, 2^212506192 is an apocalyptic number.

It is an amenable number.

212506192 is a deficient number, since it is larger than the sum of its proper divisors (199224586).

212506192 is a wasteful number, since it uses less digits than its factorization.

212506192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281645 (or 13281639 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 212506192 is about 14577.5921194140. The cubic root of 212506192 is about 596.7473920234.

The spelling of 212506192 in words is "two hundred twelve million, five hundred six thousand, one hundred ninety-two".