216426441 has 16 divisors (see below), whose sum is σ = 359774208. Its totient is φ = 112429200.

The previous prime is 216426421. The next prime is 216426451. The reversal of 216426441 is 144624612.

It is a happy number.

It is not a de Polignac number, because 216426441 - 2¹³ = 216418249 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216426399 and 216426408.

It is not an unprimeable number, because it can be changed into a prime (216426421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468225 + ... + 468686.

It is an arithmetic number, because the mean of its divisors is an integer number (22485888).

Almost surely, 2^216426441 is an apocalyptic number.

216426441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

216426441 is a deficient number, since it is larger than the sum of its proper divisors (143347767).

216426441 is a wasteful number, since it uses less digits than its factorization.

216426441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936932.

The product of its digits is 9216, while the sum is 30.

The square root of 216426441 is about 14711.4391206299. The cubic root of 216426441 is about 600.3945932145.

The spelling of 216426441 in words is "two hundred sixteen million, four hundred twenty-six thousand, four hundred forty-one".