84571320 has 32 divisors (see below), whose sum is σ = 253714320. Its totient is φ = 22552320.

The previous prime is 84571309. The next prime is 84571349. The reversal of 84571320 is 2317548.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352261 + ... + 352500.

Almost surely, 2^84571320 is an apocalyptic number.

It is an amenable number.

84571320 is an abundant number, since it is smaller than the sum of its proper divisors (169143000).

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

84571320 is a wasteful number, since it uses less digits than its factorization.

84571320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704775 (or 704771 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 84571320 is about 9196.2666338031. The cubic root of 84571320 is about 438.9425709646.

Adding to 84571320 its reverse (2317548), we get a palindrome (86888868).

The spelling of 84571320 in words is "eighty-four million, five hundred seventy-one thousand, three hundred twenty".