212287080 has 64 divisors (see below), whose sum is σ = 639797760. Its totient is φ = 56348928.

The previous prime is 212287067. The next prime is 212287081. The reversal of 212287080 is 80782212.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (212287081) 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, 22794 + ... + 30726.

It is an arithmetic number, because the mean of its divisors is an integer number (9996840).

Almost surely, 2^212287080 is an apocalyptic number.

212287080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212287080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319898880).

212287080 is an abundant number, since it is smaller than the sum of its proper divisors (427510680).

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

212287080 is a wasteful number, since it uses less digits than its factorization.

212287080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170 (or 8166 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 212287080 is about 14570.0748110639. The cubic root of 212287080 is about 596.5422223469.

The spelling of 212287080 in words is "two hundred twelve million, two hundred eighty-seven thousand, eighty".