217066030 has 32 divisors (see below), whose sum is σ = 427057920. Its totient is φ = 79080960.

The previous prime is 217066007. The next prime is 217066043. The reversal of 217066030 is 30660712.

It is a super-2 number, since 2×217066030² = 94235322759921800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217065986 and 217066004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15325 + ... + 25864.

It is an arithmetic number, because the mean of its divisors is an integer number (13345560).

Almost surely, 2^217066030 is an apocalyptic number.

217066030 is a deficient number, since it is larger than the sum of its proper divisors (209991890).

217066030 is a wasteful number, since it uses less digits than its factorization.

217066030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41244.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 217066030 is about 14733.1608964268. The cubic root of 217066030 is about 600.9854454243.

The spelling of 217066030 in words is "two hundred seventeen million, sixty-six thousand, thirty".