84240340 has 24 divisors (see below), whose sum is σ = 177079392. Its totient is φ = 33662880.

The previous prime is 84240313. The next prime is 84240349. The reversal of 84240340 is 4304248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84240349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33735 + ... + 36145.

It is an arithmetic number, because the mean of its divisors is an integer number (7378308).

Almost surely, 2^84240340 is an apocalyptic number.

It is an amenable number.

84240340 is an abundant number, since it is smaller than the sum of its proper divisors (92839052).

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

84240340 is a wasteful number, since it uses less digits than its factorization.

84240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167 (or 4165 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 84240340 is about 9178.2536465278. The cubic root of 84240340 is about 438.3692042077.

Adding to 84240340 its reverse (4304248), we get a palindrome (88544588).

The spelling of 84240340 in words is "eighty-four million, two hundred forty thousand, three hundred forty".