164240456 has 16 divisors (see below), whose sum is σ = 318570300. Its totient is φ = 79288384.

The previous prime is 164240441. The next prime is 164240473. The reversal of 164240456 is 654042461.

It can be written as a sum of positive squares in 2 ways, for example, as 159617956 + 4622500 = 12634^2 + 2150^2 .

It is a super-3 number, since 3×164240456³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 353735 + ... + 354198.

Almost surely, 2^164240456 is an apocalyptic number.

It is an amenable number.

164240456 is a deficient number, since it is larger than the sum of its proper divisors (154329844).

164240456 is a wasteful number, since it uses less digits than its factorization.

164240456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707968 (or 707964 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 164240456 is about 12815.6332656642. The cubic root of 164240456 is about 547.6377540963.

The spelling of 164240456 in words is "one hundred sixty-four million, two hundred forty thousand, four hundred fifty-six".