84472320 has 160 divisors (see below), whose sum is σ = 286374528. Its totient is φ = 21168128.

The previous prime is 84472277. The next prime is 84472357. The reversal of 84472320 is 2327448.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130237 + ... + 130883.

Almost surely, 2^84472320 is an apocalyptic number.

84472320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84472320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143187264).

84472320 is an abundant number, since it is smaller than the sum of its proper divisors (201902208).

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

84472320 is a wasteful number, since it uses less digits than its factorization.

84472320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 84472320 is about 9190.8824385910. The cubic root of 84472320 is about 438.7712272909.

Adding to 84472320 its reverse (2327448), we get a palindrome (86799768).

The spelling of 84472320 in words is "eighty-four million, four hundred seventy-two thousand, three hundred twenty".