64728235 has 16 divisors (see below), whose sum is σ = 91254240. Its totient is φ = 43453440.

The previous prime is 64728229. The next prime is 64728241. The reversal of 64728235 is 53282746.

It is an interprime number because it is at equal distance from previous prime (64728229) and next prime (64728241).

It is not a de Polignac number, because 64728235 - 2⁷ = 64728107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64728194 and 64728203.

It is an unprimeable number.

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, 44550 + ... + 45979.

It is an arithmetic number, because the mean of its divisors is an integer number (5703390).

Almost surely, 2^64728235 is an apocalyptic number.

64728235 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64728235 is a deficient number, since it is larger than the sum of its proper divisors (26526005).

64728235 is a wasteful number, since it uses less digits than its factorization.

64728235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90558.

The product of its digits is 80640, while the sum is 37.

The square root of 64728235 is about 8045.3859447512. The cubic root of 64728235 is about 401.5114379450.

It can be divided in two parts, 647 and 28235, that added together give a palindrome (28882).

The spelling of 64728235 in words is "sixty-four million, seven hundred twenty-eight thousand, two hundred thirty-five".