216842504 has 32 divisors (see below), whose sum is σ = 417386520. Its totient is φ = 105570816.

The previous prime is 216842477. The next prime is 216842543. The reversal of 216842504 is 405248612.

It can be written as a sum of positive squares in 4 ways, for example, as 207417604 + 9424900 = 14402^2 + 3070^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56222 + ... + 59954.

Almost surely, 2^216842504 is an apocalyptic number.

It is an amenable number.

216842504 is a deficient number, since it is larger than the sum of its proper divisors (200544016).

216842504 is a wasteful number, since it uses less digits than its factorization.

216842504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929 (or 3925 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 216842504 is about 14725.5731297631. The cubic root of 216842504 is about 600.7790842380.

The spelling of 216842504 in words is "two hundred sixteen million, eight hundred forty-two thousand, five hundred four".