64328480 has 24 divisors (see below), whose sum is σ = 151976412. Its totient is φ = 25731328.

The previous prime is 64328479. The next prime is 64328489. The reversal of 64328480 is 8482346.

It can be written as a sum of positive squares in 2 ways, for example, as 63170704 + 1157776 = 7948^2 + 1076^2 .

It is a super-2 number, since 2×64328480² = 8276306678220800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64328480.

It is not an unprimeable number, because it can be changed into a prime (64328489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200867 + ... + 201186.

Almost surely, 2^64328480 is an apocalyptic number.

It is an amenable number.

64328480 is an abundant number, since it is smaller than the sum of its proper divisors (87647932).

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

64328480 is a wasteful number, since it uses less digits than its factorization.

64328480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402068 (or 402060 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 64328480 is about 8020.5037248293. The cubic root of 64328480 is about 400.6831658800.

The spelling of 64328480 in words is "sixty-four million, three hundred twenty-eight thousand, four hundred eighty".