8221410 has 48 divisors (see below), whose sum is σ = 21542976. Its totient is φ = 2175264.

The previous prime is 8221403. The next prime is 8221427. The reversal of 8221410 is 141228.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14757 + ... + 15303.

It is an arithmetic number, because the mean of its divisors is an integer number (448812).

Almost surely, 2^8221410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8221410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10771488).

8221410 is an abundant number, since it is smaller than the sum of its proper divisors (13321566).

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

8221410 is a wasteful number, since it uses less digits than its factorization.

8221410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 8221410 is about 2867.3001238099. The cubic root of 8221410 is about 201.8283186577.

Adding to 8221410 its reverse (141228), we get a palindrome (8362638).

The spelling of 8221410 in words is "eight million, two hundred twenty-one thousand, four hundred ten".