216130004 has 6 divisors (see below), whose sum is σ = 378227514. Its totient is φ = 108065000.

The previous prime is 216129989. The next prime is 216130009. The reversal of 216130004 is 400031612.

216130004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 1214404 = 14660^2 + 1102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216130009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27016247 + ... + 27016254.

It is an arithmetic number, because the mean of its divisors is an integer number (63037919).

Almost surely, 2^216130004 is an apocalyptic number.

It is an amenable number.

216130004 is a deficient number, since it is larger than the sum of its proper divisors (162097510).

216130004 is a wasteful number, since it uses less digits than its factorization.

216130004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54032505 (or 54032503 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 216130004 is about 14701.3606173034. The cubic root of 216130004 is about 600.1203499323.

Adding to 216130004 its reverse (400031612), we get a palindrome (616161616).

The spelling of 216130004 in words is "two hundred sixteen million, one hundred thirty thousand, four".