366138216 has 48 divisors (see below), whose sum is σ = 1005222660. Its totient is φ = 120372480.

The previous prime is 366138191. The next prime is 366138217. The reversal of 366138216 is 612831663.

366138216 is a `hidden beast` number, since 36 + 613 + 8 + 2 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 343954116 + 22184100 = 18546^2 + 4710^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (366138217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29575 + ... + 40086.

Almost surely, 2^366138216 is an apocalyptic number.

366138216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

366138216 is an abundant number, since it is smaller than the sum of its proper divisors (639084444).

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

366138216 is a wasteful number, since it uses less digits than its factorization.

366138216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69746 (or 69739 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 366138216 is about 19134.7384617611. The cubic root of 366138216 is about 715.3990411136.

Adding to 366138216 its reverse (612831663), we get a palindrome (978969879).

The spelling of 366138216 in words is "three hundred sixty-six million, one hundred thirty-eight thousand, two hundred sixteen".