212867250 has 64 divisors (see below), whose sum is σ = 549694080. Its totient is φ = 54801600.

The previous prime is 212867233. The next prime is 212867257. The reversal of 212867250 is 52768212.

It is a super-2 number, since 2×212867250² = 90624932245125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212867257) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16857 + ... + 26643.

It is an arithmetic number, because the mean of its divisors is an integer number (8588970).

Almost surely, 2^212867250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212867250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274847040).

212867250 is an abundant number, since it is smaller than the sum of its proper divisors (336826830).

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

212867250 is a wasteful number, since it uses less digits than its factorization.

212867250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9836 (or 9826 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 212867250 is about 14589.9708704301. The cubic root of 212867250 is about 597.0851680777.

It can be divided in two parts, 2128 and 67250, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 212867250 in words is "two hundred twelve million, eight hundred sixty-seven thousand, two hundred fifty".