8523740 has 24 divisors (see below), whose sum is σ = 18169872. Its totient is φ = 3358080.

The previous prime is 8523733. The next prime is 8523743. The reversal of 8523740 is 473258.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8523743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841 + ... + 4520.

It is an arithmetic number, because the mean of its divisors is an integer number (757078).

Almost surely, 2^8523740 is an apocalyptic number.

It is an amenable number.

8523740 is an abundant number, since it is smaller than the sum of its proper divisors (9646132).

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

8523740 is a wasteful number, since it uses less digits than its factorization.

8523740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6437 (or 6435 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 8523740 is about 2919.5444850182. The cubic root of 8523740 is about 204.2725755297.

Adding to 8523740 its reverse (473258), we get a palindrome (8996998).

The spelling of 8523740 in words is "eight million, five hundred twenty-three thousand, seven hundred forty".