8428727540 has 24 divisors (see below), whose sum is σ = 17702745480. Its totient is φ = 3371030528.

The previous prime is 8428727519. The next prime is 8428727597. The reversal of 8428727540 is 457278248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 232684516 + 8196043024 = 15254^2 + 90532^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147704 + ... + 196656.

It is an arithmetic number, because the mean of its divisors is an integer number (737614395).

Almost surely, 2^8428727540 is an apocalyptic number.

It is an amenable number.

8428727540 is an abundant number, since it is smaller than the sum of its proper divisors (9274017940).

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

8428727540 is a wasteful number, since it uses less digits than its factorization.

8428727540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57571 (or 57569 counting only the distinct ones).

The product of its (nonzero) digits is 1003520, while the sum is 47.

The square root of 8428727540 is about 91808.1017122127. The cubic root of 8428727540 is about 2035.1074234917.

The spelling of 8428727540 in words is "eight billion, four hundred twenty-eight million, seven hundred twenty-seven thousand, five hundred forty".