64472328 has 32 divisors (see below), whose sum is σ = 179090400. Its totient is φ = 21490704.

The previous prime is 64472323. The next prime is 64472329. The reversal of 64472328 is 82327446.

64472328 is a `hidden beast` number, since 644 + 7 + 2 + 3 + 2 + 8 = 666.

64472328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 64472292 and 64472301.

It is not an unprimeable number, because it can be changed into a prime (64472321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149026 + ... + 149457.

It is an arithmetic number, because the mean of its divisors is an integer number (5596575).

Almost surely, 2^64472328 is an apocalyptic number.

It is an amenable number.

64472328 is an abundant number, since it is smaller than the sum of its proper divisors (114618072).

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

64472328 is a wasteful number, since it uses less digits than its factorization.

64472328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298498 (or 298488 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 64472328 is about 8029.4662338165. The cubic root of 64472328 is about 400.9816058212.

The spelling of 64472328 in words is "sixty-four million, four hundred seventy-two thousand, three hundred twenty-eight".