211672216 has 32 divisors (see below), whose sum is σ = 468218880. Its totient is φ = 87789600.

The previous prime is 211672213. The next prime is 211672249. The reversal of 211672216 is 612276112.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211672211) 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, 59230 + ... + 62701.

It is an arithmetic number, because the mean of its divisors is an integer number (14631840).

Almost surely, 2^211672216 is an apocalyptic number.

It is an amenable number.

211672216 is an abundant number, since it is smaller than the sum of its proper divisors (256546664).

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

211672216 is a wasteful number, since it uses less digits than its factorization.

211672216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121975 (or 121971 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 211672216 is about 14548.9592754946. The cubic root of 211672216 is about 595.9657278012.

The spelling of 211672216 in words is "two hundred eleven million, six hundred seventy-two thousand, two hundred sixteen".