216223624 has 16 divisors (see below), whose sum is σ = 406511820. Its totient is φ = 107820480.

The previous prime is 216223619. The next prime is 216223639. The reversal of 216223624 is 426322612.

216223624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 186868900 + 29354724 = 13670^2 + 5418^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216223592 and 216223601.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33247 + ... + 39214.

Almost surely, 2^216223624 is an apocalyptic number.

It is an amenable number.

216223624 is a deficient number, since it is larger than the sum of its proper divisors (190288196).

216223624 is a wasteful number, since it uses less digits than its factorization.

216223624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72840 (or 72836 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 216223624 is about 14704.5443316004. The cubic root of 216223624 is about 600.2069878444.

The spelling of 216223624 in words is "two hundred sixteen million, two hundred twenty-three thousand, six hundred twenty-four".