216243626 has 8 divisors (see below), whose sum is σ = 327577284. Its totient is φ = 107051200.

The previous prime is 216243611. The next prime is 216243641. The reversal of 216243626 is 626342612.

216243626 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216243611) and next prime (216243641).

It can be written as a sum of positive squares in 2 ways, for example, as 194574601 + 21669025 = 13949^2 + 4655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216243626² = 93522611571255752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216243592 and 216243601.

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, 535055 + ... + 535458.

Almost surely, 2^216243626 is an apocalyptic number.

216243626 is a deficient number, since it is larger than the sum of its proper divisors (111333658).

216243626 is a wasteful number, since it uses less digits than its factorization.

216243626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070616.

The product of its digits is 20736, while the sum is 32.

The square root of 216243626 is about 14705.2244457540. The cubic root of 216243626 is about 600.2254948725.

The spelling of 216243626 in words is "two hundred sixteen million, two hundred forty-three thousand, six hundred twenty-six".