164719220 has 24 divisors (see below), whose sum is σ = 347198208. Its totient is φ = 65642400.

The previous prime is 164719199. The next prime is 164719229. The reversal of 164719220 is 22917461.

It is a happy number.

164719220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164719229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9776 + ... + 20615.

It is an arithmetic number, because the mean of its divisors is an integer number (14466592).

Almost surely, 2^164719220 is an apocalyptic number.

164719220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164719220 is an abundant number, since it is smaller than the sum of its proper divisors (182478988).

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

164719220 is a wasteful number, since it uses less digits than its factorization.

164719220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30671 (or 30669 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 164719220 is about 12834.2985784187. The cubic root of 164719220 is about 548.1693626449.

The spelling of 164719220 in words is "one hundred sixty-four million, seven hundred nineteen thousand, two hundred twenty".