216002530 has 16 divisors (see below), whose sum is σ = 390136824. Its totient is φ = 86104960.

The previous prime is 216002497. The next prime is 216002533. The reversal of 216002530 is 35200612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 194630401 + 21372129 = 13951^2 + 4623^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216002498 and 216002507.

It is not an unprimeable number, because it can be changed into a prime (216002533) 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, 33931 + ... + 39790.

Almost surely, 2^216002530 is an apocalyptic number.

216002530 is a deficient number, since it is larger than the sum of its proper divisors (174134294).

216002530 is a wasteful number, since it uses less digits than its factorization.

216002530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74021.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 216002530 is about 14697.0245287949. The cubic root of 216002530 is about 600.0023425834.

The spelling of 216002530 in words is "two hundred sixteen million, two thousand, five hundred thirty".