211967490 has 32 divisors (see below), whose sum is σ = 581397120. Its totient is φ = 48449664.

The previous prime is 211967479. The next prime is 211967513. The reversal of 211967490 is 94769112.

It is a super-3 number, since 3×211967490³ (a number of 26 digits) contains 333 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 15 ways as a sum of consecutive naturals, for example, 504475 + ... + 504894.

It is an arithmetic number, because the mean of its divisors is an integer number (18168660).

Almost surely, 2^211967490 is an apocalyptic number.

211967490 is an abundant number, since it is smaller than the sum of its proper divisors (369429630).

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

211967490 is a wasteful number, since it uses less digits than its factorization.

211967490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009386.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 211967490 is about 14559.1033377746. The cubic root of 211967490 is about 596.2427149056.

The spelling of 211967490 in words is "two hundred eleven million, nine hundred sixty-seven thousand, four hundred ninety".