64128146 has 8 divisors (see below), whose sum is σ = 96263040. Its totient is φ = 32040468.

The previous prime is 64128143. The next prime is 64128157. The reversal of 64128146 is 64182146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64128146² = 8224838218794632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64128143) 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 3 ways as a sum of consecutive naturals, for example, 8186 + ... + 13973.

It is an arithmetic number, because the mean of its divisors is an integer number (12032880).

Almost surely, 2^64128146 is an apocalyptic number.

64128146 is a deficient number, since it is larger than the sum of its proper divisors (32134894).

64128146 is a wasteful number, since it uses less digits than its factorization.

64128146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23608.

The product of its digits is 9216, while the sum is 32.

The square root of 64128146 is about 8008.0051198785. The cubic root of 64128146 is about 400.2667928477.

The spelling of 64128146 in words is "sixty-four million, one hundred twenty-eight thousand, one hundred forty-six".