216200124 has 48 divisors (see below), whose sum is σ = 640595200. Its totient is φ = 61771248.

The previous prime is 216200123. The next prime is 216200137. The reversal of 216200124 is 421002612.

216200124 is a `hidden beast` number, since 21 + 620 + 0 + 1 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 216200097 and 216200106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216200123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 142234 + ... + 143745.

Almost surely, 2^216200124 is an apocalyptic number.

It is an amenable number.

216200124 is an abundant number, since it is smaller than the sum of its proper divisors (424395076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216200124 is a wasteful number, since it uses less digits than its factorization.

216200124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285999 (or 285991 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 216200124 is about 14703.7452371836. The cubic root of 216200124 is about 600.1852428026.

Adding to 216200124 its reverse (421002612), we get a palindrome (637202736).

The spelling of 216200124 in words is "two hundred sixteen million, two hundred thousand, one hundred twenty-four".