216450904 has 16 divisors (see below), whose sum is σ = 406056600. Its totient is φ = 108169152.

The previous prime is 216450889. The next prime is 216450929. The reversal of 216450904 is 409054612.

It is a congruent number.

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, 12487 + ... + 24265.

Almost surely, 2^216450904 is an apocalyptic number.

It is an amenable number.

216450904 is a deficient number, since it is larger than the sum of its proper divisors (189605696).

216450904 is a wasteful number, since it uses less digits than its factorization.

216450904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082 (or 14078 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 216450904 is about 14712.2705249734. The cubic root of 216450904 is about 600.4172135246.

The spelling of 216450904 in words is "two hundred sixteen million, four hundred fifty thousand, nine hundred four".