216146330 has 16 divisors (see below), whose sum is σ = 411949800. Its totient is φ = 81372672.

The previous prime is 216146317. The next prime is 216146351. The reversal of 216146330 is 33641612.

It can be written as a sum of positive squares in 4 ways, for example, as 215003569 + 1142761 = 14663^2 + 1069^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216146330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635555 + ... + 635894.

Almost surely, 2^216146330 is an apocalyptic number.

216146330 is a deficient number, since it is larger than the sum of its proper divisors (195803470).

216146330 is a wasteful number, since it uses less digits than its factorization.

216146330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271473.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 216146330 is about 14701.9158615468. The cubic root of 216146330 is about 600.1354601560.

Adding to 216146330 its reverse (33641612), we get a palindrome (249787942).

The spelling of 216146330 in words is "two hundred sixteen million, one hundred forty-six thousand, three hundred thirty".