216604130 has 16 divisors (see below), whose sum is σ = 402465024. Its totient is φ = 83846640.

The previous prime is 216604109. The next prime is 216604139. The reversal of 216604130 is 31406612.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216604096 and 216604105.

It is not an unprimeable number, because it can be changed into a prime (216604139) 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, 349052 + ... + 349671.

It is an arithmetic number, because the mean of its divisors is an integer number (25154064).

Almost surely, 2^216604130 is an apocalyptic number.

216604130 is a deficient number, since it is larger than the sum of its proper divisors (185860894).

216604130 is a wasteful number, since it uses less digits than its factorization.

216604130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698761.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 216604130 is about 14717.4770256318. The cubic root of 216604130 is about 600.5588589292.

The spelling of 216604130 in words is "two hundred sixteen million, six hundred four thousand, one hundred thirty".