211434940 has 24 divisors (see below), whose sum is σ = 459325440. Its totient is φ = 81657408.

The previous prime is 211434893. The next prime is 211434959. The reversal of 211434940 is 49434112.

211434940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211434899 and 211434908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181692 + ... + 182851.

It is an arithmetic number, because the mean of its divisors is an integer number (19138560).

Almost surely, 2^211434940 is an apocalyptic number.

211434940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211434940 is an abundant number, since it is smaller than the sum of its proper divisors (247890500).

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

211434940 is a wasteful number, since it uses less digits than its factorization.

211434940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364581 (or 364579 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 211434940 is about 14540.8025913290. The cubic root of 211434940 is about 595.7429600437.

The spelling of 211434940 in words is "two hundred eleven million, four hundred thirty-four thousand, nine hundred forty".