84527220 has 24 divisors (see below), whose sum is σ = 236676384. Its totient is φ = 22540576.

The previous prime is 84527189. The next prime is 84527221. The reversal of 84527220 is 2272548.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84527221) 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 7 ways as a sum of consecutive naturals, for example, 704334 + ... + 704453.

It is an arithmetic number, because the mean of its divisors is an integer number (9861516).

Almost surely, 2^84527220 is an apocalyptic number.

It is an amenable number.

84527220 is an abundant number, since it is smaller than the sum of its proper divisors (152149164).

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

84527220 is a wasteful number, since it uses less digits than its factorization.

84527220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408799 (or 1408797 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 84527220 is about 9193.8686090242. The cubic root of 84527220 is about 438.8662616712.

Adding to 84527220 its reverse (2272548), we get a palindrome (86799768).

The spelling of 84527220 in words is "eighty-four million, five hundred twenty-seven thousand, two hundred twenty".