216450412 has 6 divisors (see below), whose sum is σ = 378788228. Its totient is φ = 108225204.

The previous prime is 216450391. The next prime is 216450419. The reversal of 216450412 is 214054612.

It is a happy number.

216450412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (216450419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27056298 + ... + 27056305.

Almost surely, 2^216450412 is an apocalyptic number.

It is an amenable number.

216450412 is a deficient number, since it is larger than the sum of its proper divisors (162337816).

216450412 is a wasteful number, since it uses less digits than its factorization.

216450412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54112607 (or 54112605 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 216450412 is about 14712.2538042273. The cubic root of 216450412 is about 600.4167586016.

The spelling of 216450412 in words is "two hundred sixteen million, four hundred fifty thousand, four hundred twelve".