212304392 has 8 divisors (see below), whose sum is σ = 398070750. Its totient is φ = 106152192.

The previous prime is 212304341. The next prime is 212304397. The reversal of 212304392 is 293403212.

It can be written as a sum of positive squares in only one way, i.e., 192820996 + 19483396 = 13886^2 + 4414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (212304397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13269017 + ... + 13269032.

Almost surely, 2^212304392 is an apocalyptic number.

It is an amenable number.

212304392 is a deficient number, since it is larger than the sum of its proper divisors (185766358).

212304392 is a wasteful number, since it uses less digits than its factorization.

212304392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26538055 (or 26538051 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 212304392 is about 14570.6688933624. The cubic root of 212304392 is about 596.5584379015.

The spelling of 212304392 in words is "two hundred twelve million, three hundred four thousand, three hundred ninety-two".