7322820 has 72 divisors (see below), whose sum is σ = 21353472. Its totient is φ = 1874880.

The previous prime is 7322813. The next prime is 7322827. The reversal of 7322820 is 282237.

It is an interprime number because it is at equal distance from previous prime (7322813) and next prime (7322827).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7322827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57597 + ... + 57723.

It is an arithmetic number, because the mean of its divisors is an integer number (296576).

Almost surely, 2^7322820 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 7322820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10676736).

7322820 is an abundant number, since it is smaller than the sum of its proper divisors (14030652).

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

7322820 is a wasteful number, since it uses less digits than its factorization.

7322820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 7322820 is about 2706.0709525066. The cubic root of 7322820 is about 194.1896681926.

The spelling of 7322820 in words is "seven million, three hundred twenty-two thousand, eight hundred twenty".