84347256 has 128 divisors (see below), whose sum is σ = 255467520. Its totient is φ = 22687104.

The previous prime is 84347239. The next prime is 84347257. The reversal of 84347256 is 65274348.

It is a happy number.

It is a super-2 number, since 2×84347256² = 14228919189459072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84347257) 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 31 ways as a sum of consecutive naturals, for example, 320581 + ... + 320843.

It is an arithmetic number, because the mean of its divisors is an integer number (1995840).

Almost surely, 2^84347256 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 84347256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127733760).

84347256 is an abundant number, since it is smaller than the sum of its proper divisors (171120264).

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

84347256 is a wasteful number, since it uses less digits than its factorization.

84347256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 381 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 84347256 is about 9184.0762191959. The cubic root of 84347256 is about 438.5545820111.

The spelling of 84347256 in words is "eighty-four million, three hundred forty-seven thousand, two hundred fifty-six".