164442216 has 16 divisors (see below), whose sum is σ = 411105600. Its totient is φ = 54814064.

The previous prime is 164442181. The next prime is 164442227. The reversal of 164442216 is 612244461.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3425856 + ... + 3425903.

It is an arithmetic number, because the mean of its divisors is an integer number (25694100).

Almost surely, 2^164442216 is an apocalyptic number.

It is an amenable number.

164442216 is an abundant number, since it is smaller than the sum of its proper divisors (246663384).

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

164442216 is a wasteful number, since it uses less digits than its factorization.

164442216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6851768 (or 6851764 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 164442216 is about 12823.5024856706. The cubic root of 164442216 is about 547.8619095464.

Adding to 164442216 its reverse (612244461), we get a palindrome (776686677).

The spelling of 164442216 in words is "one hundred sixty-four million, four hundred forty-two thousand, two hundred sixteen".