64328140 has 12 divisors (see below), whose sum is σ = 135089136. Its totient is φ = 25731248.

The previous prime is 64328137. The next prime is 64328189. The reversal of 64328140 is 4182346.

It is a junction number, because it is equal to n+sod(n) for n = 64328099 and 64328108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608184 + ... + 1608223.

It is an arithmetic number, because the mean of its divisors is an integer number (11257428).

Almost surely, 2^64328140 is an apocalyptic number.

It is an amenable number.

64328140 is an abundant number, since it is smaller than the sum of its proper divisors (70760996).

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

64328140 is a wasteful number, since it uses less digits than its factorization.

64328140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216416 (or 3216414 counting only the distinct ones).

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

The square root of 64328140 is about 8020.4825291250. The cubic root of 64328140 is about 400.6824599588.

The spelling of 64328140 in words is "sixty-four million, three hundred twenty-eight thousand, one hundred forty".