84321340 has 12 divisors (see below), whose sum is σ = 177074856. Its totient is φ = 33728528.

The previous prime is 84321331. The next prime is 84321371. The reversal of 84321340 is 4312348.

It is a super-2 number, since 2×84321340² = 14220176758791200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2108014 + ... + 2108053.

It is an arithmetic number, because the mean of its divisors is an integer number (14756238).

Almost surely, 2^84321340 is an apocalyptic number.

It is an amenable number.

84321340 is an abundant number, since it is smaller than the sum of its proper divisors (92753516).

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

84321340 is a wasteful number, since it uses less digits than its factorization.

84321340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216076 (or 4216074 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 84321340 is about 9182.6651904553. The cubic root of 84321340 is about 438.5096615820.

Adding to 84321340 its reverse (4312348), we get a palindrome (88633688).

The spelling of 84321340 in words is "eighty-four million, three hundred twenty-one thousand, three hundred forty".