211969020 has 24 divisors (see below), whose sum is σ = 593513424. Its totient is φ = 56525056.

The previous prime is 211969007. The next prime is 211969027. The reversal of 211969020 is 20969112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211969027) 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, 1766349 + ... + 1766468.

It is an arithmetic number, because the mean of its divisors is an integer number (24729726).

Almost surely, 2^211969020 is an apocalyptic number.

211969020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211969020 is an abundant number, since it is smaller than the sum of its proper divisors (381544404).

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

211969020 is a wasteful number, since it uses less digits than its factorization.

211969020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532829 (or 3532827 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 211969020 is about 14559.1558821245. The cubic root of 211969020 is about 596.2441494796.

The spelling of 211969020 in words is "two hundred eleven million, nine hundred sixty-nine thousand, twenty".