212822320 has 40 divisors (see below), whose sum is σ = 523921824. Its totient is φ = 80120832.

The previous prime is 212822317. The next prime is 212822321. The reversal of 212822320 is 23228212.

It is a happy number.

212822320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 212822291 and 212822300.

It is not an unprimeable number, because it can be changed into a prime (212822321) 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, 76884 + ... + 79603.

Almost surely, 2^212822320 is an apocalyptic number.

212822320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212822320 is an abundant number, since it is smaller than the sum of its proper divisors (311099504).

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

212822320 is a wasteful number, since it uses less digits than its factorization.

212822320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156517 (or 156511 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 212822320 is about 14588.4310328424. The cubic root of 212822320 is about 597.0431560971.

The spelling of 212822320 in words is "two hundred twelve million, eight hundred twenty-two thousand, three hundred twenty".