8436240 has 60 divisors (see below), whose sum is σ = 28334124. Its totient is φ = 2249472.

The previous prime is 8436217. The next prime is 8436271. The reversal of 8436240 is 426348.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 7420176 = 1008^2 + 2724^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5139 + ... + 6578.

Almost surely, 2^8436240 is an apocalyptic number.

8436240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8436240 is an abundant number, since it is smaller than the sum of its proper divisors (19897884).

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

8436240 is a wasteful number, since it uses less digits than its factorization.

8436240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736 (or 11727 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 8436240 is about 2904.5206144905. The cubic root of 8436240 is about 203.5711869144.

The spelling of 8436240 in words is "eight million, four hundred thirty-six thousand, two hundred forty".