64051280 has 40 divisors (see below), whose sum is σ = 156760800. Its totient is φ = 24271488.

The previous prime is 64051279. The next prime is 64051289. The reversal of 64051280 is 8215046.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64051289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19550 + ... + 22589.

It is an arithmetic number, because the mean of its divisors is an integer number (3919020).

Almost surely, 2^64051280 is an apocalyptic number.

It is an amenable number.

64051280 is an abundant number, since it is smaller than the sum of its proper divisors (92709520).

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

64051280 is a wasteful number, since it uses less digits than its factorization.

64051280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42171 (or 42165 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 64051280 is about 8003.2043582555. The cubic root of 64051280 is about 400.1068048126.

The spelling of 64051280 in words is "sixty-four million, fifty-one thousand, two hundred eighty".