8436740 has 48 divisors (see below), whose sum is σ = 19618032. Its totient is φ = 3027456.

The previous prime is 8436739. The next prime is 8436749. The reversal of 8436740 is 476348.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 188356 + 8248384 = 434^2 + 2872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8436697 and 8436706.

It is not an unprimeable number, because it can be changed into a prime (8436749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9182 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (408709).

Almost surely, 2^8436740 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 8436740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9809016).

8436740 is an abundant number, since it is smaller than the sum of its proper divisors (11181292).

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

8436740 is a wasteful number, since it uses less digits than its factorization.

8436740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 8436740 is about 2904.6066859387. The cubic root of 8436740 is about 203.5752085947.

The spelling of 8436740 in words is "eight million, four hundred thirty-six thousand, seven hundred forty".