7284220 has 48 divisors (see below), whose sum is σ = 16682400. Its totient is φ = 2661120.

The previous prime is 7284217. The next prime is 7284223. The reversal of 7284220 is 224827.

It is an interprime number because it is at equal distance from previous prime (7284217) and next prime (7284223).

It is a super-2 number, since 2×7284220² = 106119722016800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7284223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10690 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (347550).

Almost surely, 2^7284220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7284220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8341200).

7284220 is an abundant number, since it is smaller than the sum of its proper divisors (9398180).

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

7284220 is a wasteful number, since it uses less digits than its factorization.

7284220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 7284220 is about 2698.9294173802. The cubic root of 7284220 is about 193.8478631520.

The spelling of 7284220 in words is "seven million, two hundred eighty-four thousand, two hundred twenty".