216225402 has 16 divisors (see below), whose sum is σ = 432976320. Its totient is φ = 71987552.

The previous prime is 216225391. The next prime is 216225407. The reversal of 216225402 is 204522612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216225407) 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, 16443 + ... + 26510.

It is an arithmetic number, because the mean of its divisors is an integer number (27061020).

Almost surely, 2^216225402 is an apocalyptic number.

216225402 is an abundant number, since it is smaller than the sum of its proper divisors (216750918).

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

216225402 is a wasteful number, since it uses less digits than its factorization.

216225402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43797.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 216225402 is about 14704.6047889768. The cubic root of 216225402 is about 600.2086330009.

The spelling of 216225402 in words is "two hundred sixteen million, two hundred twenty-five thousand, four hundred two".