84418272 has 72 divisors (see below), whose sum is σ = 241722936. Its totient is φ = 27945216.

The previous prime is 84418267. The next prime is 84418283. The reversal of 84418272 is 27281448.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44283 + ... + 46149.

It is an arithmetic number, because the mean of its divisors is an integer number (3357263).

Almost surely, 2^84418272 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 84418272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120861468).

84418272 is an abundant number, since it is smaller than the sum of its proper divisors (157304664).

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

84418272 is a wasteful number, since it uses less digits than its factorization.

84418272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2029 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 84418272 is about 9187.9416628535. The cubic root of 84418272 is about 438.6776275299.

The spelling of 84418272 in words is "eighty-four million, four hundred eighteen thousand, two hundred seventy-two".