64322928 has 120 divisors (see below), whose sum is σ = 189667920. Its totient is φ = 20321280.

The previous prime is 64322911. The next prime is 64322941. The reversal of 64322928 is 82922346.

64322928 is a `hidden beast` number, since 643 + 2 + 2 + 9 + 2 + 8 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 64322892 and 64322901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304743 + ... + 304953.

It is an arithmetic number, because the mean of its divisors is an integer number (1580566).

Almost surely, 2^64322928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64322928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94833960).

64322928 is an abundant number, since it is smaller than the sum of its proper divisors (125344992).

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

64322928 is a wasteful number, since it uses less digits than its factorization.

64322928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 318 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 64322928 is about 8020.1576044365. The cubic root of 64322928 is about 400.6716382905.

The spelling of 64322928 in words is "sixty-four million, three hundred twenty-two thousand, nine hundred twenty-eight".