212809950 has 48 divisors (see below), whose sum is σ = 586413360. Its totient is φ = 56748960.

The previous prime is 212809943. The next prime is 212809957. The reversal of 212809950 is 59908212.

It is an interprime number because it is at equal distance from previous prime (212809943) and next prime (212809957).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212809957) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 77469 + ... + 80168.

It is an arithmetic number, because the mean of its divisors is an integer number (12216945).

Almost surely, 2^212809950 is an apocalyptic number.

212809950 is an abundant number, since it is smaller than the sum of its proper divisors (373603410).

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

212809950 is a wasteful number, since it uses less digits than its factorization.

212809950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157658 (or 157647 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 212809950 is about 14588.0070605960. The cubic root of 212809950 is about 597.0315884399.

The spelling of 212809950 in words is "two hundred twelve million, eight hundred nine thousand, nine hundred fifty".