211040290 has 8 divisors (see below), whose sum is σ = 379872540. Its totient is φ = 84416112.

The previous prime is 211040251. The next prime is 211040317. The reversal of 211040290 is 92040112.

It can be written as a sum of positive squares in 2 ways, for example, as 211033729 + 6561 = 14527^2 + 81^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10552005 + ... + 10552024.

Almost surely, 2^211040290 is an apocalyptic number.

211040290 is a deficient number, since it is larger than the sum of its proper divisors (168832250).

211040290 is a wasteful number, since it uses less digits than its factorization.

211040290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104036.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 211040290 is about 14527.2258191301. The cubic root of 211040290 is about 595.3720714997.

The spelling of 211040290 in words is "two hundred eleven million, forty thousand, two hundred ninety".