216012324 has 24 divisors (see below), whose sum is σ = 549849888. Its totient is φ = 65458240.

The previous prime is 216012323. The next prime is 216012347. The reversal of 216012324 is 423210612.

It is a super-2 number, since 2×216012324² = 93322648239761952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216012324.

It is not an unprimeable number, because it can be changed into a prime (216012323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818097 + ... + 818360.

It is an arithmetic number, because the mean of its divisors is an integer number (22910412).

Almost surely, 2^216012324 is an apocalyptic number.

It is an amenable number.

216012324 is an abundant number, since it is smaller than the sum of its proper divisors (333837564).

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

216012324 is a wasteful number, since it uses less digits than its factorization.

216012324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636475 (or 1636473 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 216012324 is about 14697.3577217131. The cubic root of 216012324 is about 600.0114108941.

Adding to 216012324 its reverse (423210612), we get a palindrome (639222936).

The spelling of 216012324 in words is "two hundred sixteen million, twelve thousand, three hundred twenty-four".