64088728 has 16 divisors (see below), whose sum is σ = 131090760. Its totient is φ = 29131200.

The previous prime is 64088723. The next prime is 64088771. The reversal of 64088728 is 82788046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64088723) 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, 364053 + ... + 364228.

Almost surely, 2^64088728 is an apocalyptic number.

It is an amenable number.

64088728 is an abundant number, since it is smaller than the sum of its proper divisors (67002032).

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

64088728 is a wasteful number, since it uses less digits than its factorization.

64088728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728298 (or 728294 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 64088728 is about 8005.5435792955. The cubic root of 64088728 is about 400.1847646419.

The spelling of 64088728 in words is "sixty-four million, eighty-eight thousand, seven hundred twenty-eight".