211993250 has 32 divisors (see below), whose sum is σ = 453548160. Its totient is φ = 72682800.

The previous prime is 211993237. The next prime is 211993259. The reversal of 211993250 is 52399112.

It is a super-2 number, since 2×211993250² = 89882276091125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211993259) 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 15 ways as a sum of consecutive naturals, for example, 58820 + ... + 62319.

It is an arithmetic number, because the mean of its divisors is an integer number (14173380).

Almost surely, 2^211993250 is an apocalyptic number.

211993250 is an abundant number, since it is smaller than the sum of its proper divisors (241554910).

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

211993250 is a wasteful number, since it uses less digits than its factorization.

211993250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121163 (or 121153 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 211993250 is about 14559.9879807643. The cubic root of 211993250 is about 596.2668673360.

The spelling of 211993250 in words is "two hundred eleven million, nine hundred ninety-three thousand, two hundred fifty".