164023320 has 32 divisors (see below), whose sum is σ = 492070320. Its totient is φ = 43739520.

The previous prime is 164023319. The next prime is 164023337. The reversal of 164023320 is 23320461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683311 + ... + 683550.

Almost surely, 2^164023320 is an apocalyptic number.

164023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164023320 is an abundant number, since it is smaller than the sum of its proper divisors (328047000).

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

164023320 is a wasteful number, since it uses less digits than its factorization.

164023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366875 (or 1366871 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 164023320 is about 12807.1589355329. The cubic root of 164023320 is about 547.3963107156.

Adding to 164023320 its reverse (23320461), we get a palindrome (187343781).

The spelling of 164023320 in words is "one hundred sixty-four million, twenty-three thousand, three hundred twenty".