216201430 has 16 divisors (see below), whose sum is σ = 389389104. Its totient is φ = 86430240.

The previous prime is 216201421. The next prime is 216201439. The reversal of 216201430 is 34102612.

It is an interprime number because it is at equal distance from previous prime (216201421) and next prime (216201439).

It is a junction number, because it is equal to n+sod(n) for n = 216201398 and 216201407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216201439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15265 + ... + 25795.

It is an arithmetic number, because the mean of its divisors is an integer number (24336819).

Almost surely, 2^216201430 is an apocalyptic number.

216201430 is a deficient number, since it is larger than the sum of its proper divisors (173187674).

216201430 is a wasteful number, since it uses less digits than its factorization.

216201430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12591.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 216201430 is about 14703.7896475705. The cubic root of 216201430 is about 600.1864513131.

The spelling of 216201430 in words is "two hundred sixteen million, two hundred one thousand, four hundred thirty".