216223524 has 36 divisors (see below), whose sum is σ = 596253840. Its totient is φ = 65522160.

The previous prime is 216223489. The next prime is 216223537. The reversal of 216223524 is 425322612.

It is a happy number.

216223524 is a `hidden beast` number, since 2 + 1 + 622 + 35 + 2 + 4 = 666.

216223524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×216223524² = 93505224661957152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272614 + ... + 273405.

Almost surely, 2^216223524 is an apocalyptic number.

It is an amenable number.

216223524 is an abundant number, since it is smaller than the sum of its proper divisors (380030316).

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

216223524 is a wasteful number, since it uses less digits than its factorization.

216223524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546040 (or 546035 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 216223524 is about 14704.5409312906. The cubic root of 216223524 is about 600.2068953157.

The spelling of 216223524 in words is "two hundred sixteen million, two hundred twenty-three thousand, five hundred twenty-four".