64028155 has 8 divisors (see below), whose sum is σ = 77916384. Its totient is φ = 50500800.

The previous prime is 64028149. The next prime is 64028177. The reversal of 64028155 is 55182046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64028155 - 2⁵ = 64028123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89826 + ... + 90535.

It is an arithmetic number, because the mean of its divisors is an integer number (9739548).

Almost surely, 2^64028155 is an apocalyptic number.

64028155 is a deficient number, since it is larger than the sum of its proper divisors (13888229).

64028155 is a wasteful number, since it uses less digits than its factorization.

64028155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180437.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 64028155 is about 8001.7594940113. The cubic root of 64028155 is about 400.0586476507.

The spelling of 64028155 in words is "sixty-four million, twenty-eight thousand, one hundred fifty-five".