4257512728 has 32 divisors (see below), whose sum is σ = 9251746560. Its totient is φ = 1798947360.

The previous prime is 4257512711. The next prime is 4257512729. The reversal of 4257512728 is 8272157524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4257512729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531426 + ... + 539377.

It is an arithmetic number, because the mean of its divisors is an integer number (289117080).

Almost surely, 2^4257512728 is an apocalyptic number.

It is an amenable number.

4257512728 is an abundant number, since it is smaller than the sum of its proper divisors (4994233832).

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

4257512728 is a wasteful number, since it uses less digits than its factorization.

4257512728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070887 (or 1070883 counting only the distinct ones).

The product of its digits is 313600, while the sum is 43.

The square root of 4257512728 is about 65249.6186042493. The cubic root of 4257512728 is about 1620.7597828113.

The spelling of 4257512728 in words is "four billion, two hundred fifty-seven million, five hundred twelve thousand, seven hundred twenty-eight".