216340152 has 32 divisors (see below), whose sum is σ = 618115200. Its totient is φ = 61811424.

The previous prime is 216340151. The next prime is 216340153. The reversal of 216340152 is 251043612.

216340152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216340151) and next prime (216340153).

It is a super-2 number, since 2×216340152² = 93606122734766208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216340151) 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, 643702 + ... + 644037.

It is an arithmetic number, because the mean of its divisors is an integer number (19316100).

Almost surely, 2^216340152 is an apocalyptic number.

It is an amenable number.

216340152 is an abundant number, since it is smaller than the sum of its proper divisors (401775048).

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

216340152 is a wasteful number, since it uses less digits than its factorization.

216340152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287755 (or 1287751 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216340152 is about 14708.5061104111. The cubic root of 216340152 is about 600.3147903717.

Adding to 216340152 its reverse (251043612), we get a palindrome (467383764).

The spelling of 216340152 in words is "two hundred sixteen million, three hundred forty thousand, one hundred fifty-two".