212983728 has 20 divisors (see below), whose sum is σ = 550208088. Its totient is φ = 70994560.

The previous prime is 212983717. The next prime is 212983753. The reversal of 212983728 is 827389212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212983728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218533 + ... + 2218628.

Almost surely, 2^212983728 is an apocalyptic number.

It is an amenable number.

212983728 is an abundant number, since it is smaller than the sum of its proper divisors (337224360).

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

212983728 is a wasteful number, since it uses less digits than its factorization.

212983728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437172 (or 4437166 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 212983728 is about 14593.9620391448. The cubic root of 212983728 is about 597.1940537877.

The spelling of 212983728 in words is "two hundred twelve million, nine hundred eighty-three thousand, seven hundred twenty-eight".