164503420 has 12 divisors (see below), whose sum is σ = 345457224. Its totient is φ = 65801360.

The previous prime is 164503411. The next prime is 164503459. The reversal of 164503420 is 24305461.

It is a super-2 number, since 2×164503420² = 54122750383392800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4112566 + ... + 4112605.

It is an arithmetic number, because the mean of its divisors is an integer number (28788102).

Almost surely, 2^164503420 is an apocalyptic number.

164503420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164503420 is an abundant number, since it is smaller than the sum of its proper divisors (180953804).

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

164503420 is a wasteful number, since it uses less digits than its factorization.

164503420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225180 (or 8225178 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 164503420 is about 12825.8886631687. Note that the first 3 decimals coincide. The cubic root of 164503420 is about 547.9298709697.

Adding to 164503420 its reverse (24305461), we get a palindrome (188808881).

The spelling of 164503420 in words is "one hundred sixty-four million, five hundred three thousand, four hundred twenty".