216504124 has 24 divisors (see below), whose sum is σ = 392000000. Its totient is φ = 104520240.

The previous prime is 216504103. The next prime is 216504133. The reversal of 216504124 is 421405612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60127 + ... + 63625.

Almost surely, 2^216504124 is an apocalyptic number.

It is an amenable number.

216504124 is a deficient number, since it is larger than the sum of its proper divisors (175495876).

216504124 is a wasteful number, since it uses less digits than its factorization.

216504124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 4031 counting only the distinct ones).

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

The square root of 216504124 is about 14714.0791081195. The cubic root of 216504124 is about 600.4664188100.

Adding to 216504124 its reverse (421405612), we get a palindrome (637909736).

The spelling of 216504124 in words is "two hundred sixteen million, five hundred four thousand, one hundred twenty-four".