8257060440 has 96 divisors (see below), whose sum is σ = 27137073600. Its totient is φ = 2177134080.

The previous prime is 8257060393. The next prime is 8257060457. The reversal of 8257060440 is 440607528.

8257060440 is a `hidden beast` number, since 8 + 2 + 5 + 7 + 0 + 604 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8257060395 and 8257060404.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 96816 + ... + 160895.

It is an arithmetic number, because the mean of its divisors is an integer number (282677850).

Almost surely, 2^8257060440 is an apocalyptic number.

It is an amenable number.

8257060440 is an abundant number, since it is smaller than the sum of its proper divisors (18880013160).

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

8257060440 is a wasteful number, since it uses less digits than its factorization.

8257060440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257817 (or 257810 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 8257060440 is about 90868.3687539289. The cubic root of 8257060440 is about 2021.1962688356.

Adding to 8257060440 its reverse (440607528), we get a palindrome (8697667968).

The spelling of 8257060440 in words is "eight billion, two hundred fifty-seven million, sixty thousand, four hundred forty".