216461426 has 4 divisors (see below), whose sum is σ = 324692142. Its totient is φ = 108230712.

The previous prime is 216461411. The next prime is 216461429. The reversal of 216461426 is 624164612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 213130801 + 3330625 = 14599^2 + 1825^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216461392 and 216461401.

It is not an unprimeable number, because it can be changed into a prime (216461429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54115355 + ... + 54115358.

Almost surely, 2^216461426 is an apocalyptic number.

216461426 is a deficient number, since it is larger than the sum of its proper divisors (108230716).

216461426 is a wasteful number, since it uses less digits than its factorization.

216461426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108230715.

The product of its digits is 13824, while the sum is 32.

The square root of 216461426 is about 14712.6281132910. The cubic root of 216461426 is about 600.4269424245.

The spelling of 216461426 in words is "two hundred sixteen million, four hundred sixty-one thousand, four hundred twenty-six".