211842870 has 16 divisors (see below), whose sum is σ = 508422960. Its totient is φ = 56491424.

The previous prime is 211842847. The next prime is 211842877. The reversal of 211842870 is 78248112.

It is a happy number.

211842870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211842877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3530685 + ... + 3530744.

It is an arithmetic number, because the mean of its divisors is an integer number (31776435).

Almost surely, 2^211842870 is an apocalyptic number.

211842870 is an abundant number, since it is smaller than the sum of its proper divisors (296580090).

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

211842870 is a wasteful number, since it uses less digits than its factorization.

211842870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7061439.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 211842870 is about 14554.8229120110. The cubic root of 211842870 is about 596.1258442580.

The spelling of 211842870 in words is "two hundred eleven million, eight hundred forty-two thousand, eight hundred seventy".