8557340 has 48 divisors (see below), whose sum is σ = 19855584. Its totient is φ = 3072000.

The previous prime is 8557319. The next prime is 8557363. The reversal of 8557340 is 437558.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8557297 and 8557306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21140 + ... + 21540.

It is an arithmetic number, because the mean of its divisors is an integer number (413658).

Almost surely, 2^8557340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8557340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9927792).

8557340 is an abundant number, since it is smaller than the sum of its proper divisors (11298244).

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

8557340 is a wasteful number, since it uses less digits than its factorization.

8557340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 8557340 is about 2925.2931477033. The cubic root of 8557340 is about 204.5406331224.

The spelling of 8557340 in words is "eight million, five hundred fifty-seven thousand, three hundred forty".