84220470 has 48 divisors (see below), whose sum is σ = 220354992. Its totient is φ = 22317120.

The previous prime is 84220469. The next prime is 84220471. The reversal of 84220470 is 7402248.

It is an interprime number because it is at equal distance from previous prime (84220469) and next prime (84220471).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84220471) 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 23 ways as a sum of consecutive naturals, for example, 11800 + ... + 17540.

It is an arithmetic number, because the mean of its divisors is an integer number (4590729).

Almost surely, 2^84220470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84220470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110177496).

84220470 is an abundant number, since it is smaller than the sum of its proper divisors (136134522).

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

84220470 is a wasteful number, since it uses less digits than its factorization.

84220470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917 (or 5914 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 84220470 is about 9177.1711327620. The cubic root of 84220470 is about 438.3347350486.

It can be divided in two parts, 842 and 20470, that added together give a palindrome (21312).

The spelling of 84220470 in words is "eighty-four million, two hundred twenty thousand, four hundred seventy".