4457528768 has 56 divisors (see below), whose sum is σ = 11028054144. Its totient is φ = 1736697600.

The previous prime is 4457528767. The next prime is 4457528773. The reversal of 4457528768 is 8678257544.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457528767) 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, 447338 + ... + 457193.

Almost surely, 2^4457528768 is an apocalyptic number.

It is an amenable number.

4457528768 is an abundant number, since it is smaller than the sum of its proper divisors (6570525376).

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

4457528768 is a wasteful number, since it uses less digits than its factorization.

4457528768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904561 (or 904551 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 56.

The square root of 4457528768 is about 66764.7269746533. The cubic root of 4457528768 is about 1645.7532380046.

The spelling of 4457528768 in words is "four billion, four hundred fifty-seven million, five hundred twenty-eight thousand, seven hundred sixty-eight".