8557940 has 24 divisors (see below), whose sum is σ = 18030600. Its totient is φ = 3411968.

The previous prime is 8557937. The next prime is 8557981. The reversal of 8557940 is 497558.

It can be written as a sum of positive squares in 4 ways, for example, as 929296 + 7628644 = 964^2 + 2762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8557894 and 8557903.

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, 8504 + ... + 9456.

It is an arithmetic number, because the mean of its divisors is an integer number (751275).

Almost surely, 2^8557940 is an apocalyptic number.

It is an amenable number.

8557940 is an abundant number, since it is smaller than the sum of its proper divisors (9472660).

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

8557940 is a wasteful number, since it uses less digits than its factorization.

8557940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 8557940 is about 2925.3956997302. The cubic root of 8557940 is about 204.5454134830.

The spelling of 8557940 in words is "eight million, five hundred fifty-seven thousand, nine hundred forty".