216396134 has 4 divisors (see below), whose sum is σ = 324594204. Its totient is φ = 108198066.

The previous prime is 216396119. The next prime is 216396139. The reversal of 216396134 is 431693612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 216396094 and 216396103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216396139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54099032 + ... + 54099035.

It is an arithmetic number, because the mean of its divisors is an integer number (81148551).

Almost surely, 2^216396134 is an apocalyptic number.

216396134 is a deficient number, since it is larger than the sum of its proper divisors (108198070).

216396134 is a wasteful number, since it uses less digits than its factorization.

216396134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108198069.

The product of its digits is 23328, while the sum is 35.

The square root of 216396134 is about 14710.4090357814. The cubic root of 216396134 is about 600.3665667432.

The spelling of 216396134 in words is "two hundred sixteen million, three hundred ninety-six thousand, one hundred thirty-four".