216320070 has 32 divisors (see below), whose sum is σ = 549708768. Its totient is φ = 54291968.

The previous prime is 216320047. The next prime is 216320099. The reversal of 216320070 is 70023612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211569 + ... + 212588.

It is an arithmetic number, because the mean of its divisors is an integer number (17178399).

Almost surely, 2^216320070 is an apocalyptic number.

216320070 is an abundant number, since it is smaller than the sum of its proper divisors (333388698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216320070 is a wasteful number, since it uses less digits than its factorization.

216320070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424184.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 216320070 is about 14707.8234283663. The cubic root of 216320070 is about 600.2962148483.

Adding to 216320070 its reverse (70023612), we get a palindrome (286343682).

The spelling of 216320070 in words is "two hundred sixteen million, three hundred twenty thousand, seventy".