84347472 has 80 divisors (see below), whose sum is σ = 251716032. Its totient is φ = 24053760.

The previous prime is 84347443. The next prime is 84347477. The reversal of 84347472 is 27474348.

It is a super-2 number, since 2×84347472² = 14228992065581568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84347472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84347477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4278 + ... + 13674.

Almost surely, 2^84347472 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 84347472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125858016).

84347472 is an abundant number, since it is smaller than the sum of its proper divisors (167368560).

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

84347472 is a wasteful number, since it uses less digits than its factorization.

84347472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436 (or 9430 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 84347472 is about 9184.0879786727. The cubic root of 84347472 is about 438.5549563671.

The spelling of 84347472 in words is "eighty-four million, three hundred forty-seven thousand, four hundred seventy-two".