212292386 has 8 divisors (see below), whose sum is σ = 318503340. Its totient is φ = 106124608.

The previous prime is 212292349. The next prime is 212292403. The reversal of 212292386 is 683292212.

It can be written as a sum of positive squares in 2 ways, for example, as 204061225 + 8231161 = 14285^2 + 2869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8150 + ... + 22158.

Almost surely, 2^212292386 is an apocalyptic number.

212292386 is a deficient number, since it is larger than the sum of its proper divisors (106210954).

212292386 is a wasteful number, since it uses less digits than its factorization.

212292386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21588.

The product of its digits is 20736, while the sum is 35.

The square root of 212292386 is about 14570.2568954703. The cubic root of 212292386 is about 596.5471923882.

The spelling of 212292386 in words is "two hundred twelve million, two hundred ninety-two thousand, three hundred eighty-six".