164624140 has 24 divisors (see below), whose sum is σ = 348037200. Its totient is φ = 65406528.

The previous prime is 164624129. The next prime is 164624149. The reversal of 164624140 is 41426461.

It is a super-2 number, since 2×164624140² = 54202214941479200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164624099 and 164624108.

It is not an unprimeable number, because it can be changed into a prime (164624149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24642 + ... + 30601.

It is an arithmetic number, because the mean of its divisors is an integer number (14501550).

Almost surely, 2^164624140 is an apocalyptic number.

164624140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164624140 is an abundant number, since it is smaller than the sum of its proper divisors (183413060).

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

164624140 is a wasteful number, since it uses less digits than its factorization.

164624140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55401 (or 55399 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 164624140 is about 12830.5939067527. The cubic root of 164624140 is about 548.0638700486.

It can be divided in two parts, 16462 and 4140, that added together give a palindrome (20602).

The spelling of 164624140 in words is "one hundred sixty-four million, six hundred twenty-four thousand, one hundred forty".