212871976 has 16 divisors (see below), whose sum is σ = 399729600. Its totient is φ = 106277424.

The previous prime is 212871917. The next prime is 212872001. The reversal of 212871976 is 679178212.

It is a super-2 number, since 2×212871976² = 90628956332289152, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14016 + ... + 24943.

It is an arithmetic number, because the mean of its divisors is an integer number (24983100).

Almost surely, 2^212871976 is an apocalyptic number.

It is an amenable number.

212871976 is a deficient number, since it is larger than the sum of its proper divisors (186857624).

212871976 is a wasteful number, since it uses less digits than its factorization.

212871976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39648 (or 39644 counting only the distinct ones).

The product of its digits is 84672, while the sum is 43.

The square root of 212871976 is about 14590.1328301013. The cubic root of 212871976 is about 597.0895867997.

The spelling of 212871976 in words is "two hundred twelve million, eight hundred seventy-one thousand, nine hundred seventy-six".