211136730 has 32 divisors (see below), whose sum is σ = 579118464. Its totient is φ = 48259776.

The previous prime is 211136729. The next prime is 211136767. The reversal of 211136730 is 37631112.

211136730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 211136730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502497 + ... + 502916.

It is an arithmetic number, because the mean of its divisors is an integer number (18097452).

Almost surely, 2^211136730 is an apocalyptic number.

211136730 is an abundant number, since it is smaller than the sum of its proper divisors (367981734).

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

211136730 is a wasteful number, since it uses less digits than its factorization.

211136730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005430.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 211136730 is about 14530.5447248202. The cubic root of 211136730 is about 595.4627476113.

Adding to 211136730 its reverse (37631112), we get a palindrome (248767842).

The spelling of 211136730 in words is "two hundred eleven million, one hundred thirty-six thousand, seven hundred thirty".