64028215 has 16 divisors (see below), whose sum is σ = 78629760. Its totient is φ = 50038560.

The previous prime is 64028213. The next prime is 64028221. The reversal of 64028215 is 51282046.

It is not a de Polignac number, because 64028215 - 2¹ = 64028213 is a prime.

It is a super-2 number, since 2×64028215² = 8199224632172450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64028213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43156 + ... + 44614.

It is an arithmetic number, because the mean of its divisors is an integer number (4914360).

Almost surely, 2^64028215 is an apocalyptic number.

64028215 is a deficient number, since it is larger than the sum of its proper divisors (14601545).

64028215 is a wasteful number, since it uses less digits than its factorization.

64028215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 64028215 is about 8001.7632431858. The cubic root of 64028215 is about 400.0587726140.

The spelling of 64028215 in words is "sixty-four million, twenty-eight thousand, two hundred fifteen".