164454420 has 48 divisors (see below), whose sum is σ = 495895680. Its totient is φ = 40480896.

The previous prime is 164454397. The next prime is 164454421. The reversal of 164454420 is 24454461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164454421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104640 + ... + 106199.

It is an arithmetic number, because the mean of its divisors is an integer number (10331160).

Almost surely, 2^164454420 is an apocalyptic number.

164454420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164454420 is an abundant number, since it is smaller than the sum of its proper divisors (331441260).

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

164454420 is a wasteful number, since it uses less digits than its factorization.

164454420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210864 (or 210862 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 164454420 is about 12823.9783218781. The cubic root of 164454420 is about 547.8754623138.

The spelling of 164454420 in words is "one hundred sixty-four million, four hundred fifty-four thousand, four hundred twenty".