212350656 has 56 divisors (see below), whose sum is σ = 642112000. Its totient is φ = 60671232.

The previous prime is 212350637. The next prime is 212350661. The reversal of 212350656 is 656053212.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×212350656² = 90185602207260672, 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 7 ways as a sum of consecutive naturals, for example, 77656 + ... + 80343.

Almost surely, 2^212350656 is an apocalyptic number.

It is an amenable number.

212350656 is an abundant number, since it is smaller than the sum of its proper divisors (429761344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212350656 is a wasteful number, since it uses less digits than its factorization.

212350656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158021 (or 158011 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 212350656 is about 14572.2563798473. The cubic root of 212350656 is about 596.6017674731.

The spelling of 212350656 in words is "two hundred twelve million, three hundred fifty thousand, six hundred fifty-six".