212712046 has 16 divisors (see below), whose sum is σ = 322315776. Its totient is φ = 105277536.

The previous prime is 212712029. The next prime is 212712061. The reversal of 212712046 is 640217212.

It is a super-2 number, since 2×212712046² = 90492829027012232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212712046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171340 + ... + 172576.

It is an arithmetic number, because the mean of its divisors is an integer number (20144736).

Almost surely, 2^212712046 is an apocalyptic number.

212712046 is a deficient number, since it is larger than the sum of its proper divisors (109603730).

212712046 is a wasteful number, since it uses less digits than its factorization.

212712046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 212712046 is about 14584.6510414202. The cubic root of 212712046 is about 596.9400188703.

Adding to 212712046 its reverse (640217212), we get a palindrome (852929258).

The spelling of 212712046 in words is "two hundred twelve million, seven hundred twelve thousand, forty-six".