64928480 has 48 divisors (see below), whose sum is σ = 154087920. Its totient is φ = 25853952.

The previous prime is 64928473. The next prime is 64928503. The reversal of 64928480 is 8482946.

It is a super-2 number, since 2×64928480² = 8431415030220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40331 + ... + 41909.

It is an arithmetic number, because the mean of its divisors is an integer number (3210165).

Almost surely, 2^64928480 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 64928480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77043960).

64928480 is an abundant number, since it is smaller than the sum of its proper divisors (89159440).

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

64928480 is a wasteful number, since it uses less digits than its factorization.

64928480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 64928480 is about 8057.8210454192. The cubic root of 64928480 is about 401.9250538898.

The spelling of 64928480 in words is "sixty-four million, nine hundred twenty-eight thousand, four hundred eighty".