211436864 has 112 divisors (see below), whose sum is σ = 468172800. Its totient is φ = 94348800.

The previous prime is 211436831. The next prime is 211436867. The reversal of 211436864 is 468634112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211436867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676377 + ... + 2676455.

Almost surely, 2^211436864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211436864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234086400).

211436864 is an abundant number, since it is smaller than the sum of its proper divisors (256735936).

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

211436864 is a wasteful number, since it uses less digits than its factorization.

211436864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 202 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 211436864 is about 14540.8687498375. The cubic root of 211436864 is about 595.7447670708.

The spelling of 211436864 in words is "two hundred eleven million, four hundred thirty-six thousand, eight hundred sixty-four".