7285820 has 12 divisors (see below), whose sum is σ = 15300264. Its totient is φ = 2914320.

The previous prime is 7285819. The next prime is 7285841. The reversal of 7285820 is 285827.

It is a super-3 number, since 3×7285820³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182126 + ... + 182165.

It is an arithmetic number, because the mean of its divisors is an integer number (1275022).

Almost surely, 2^7285820 is an apocalyptic number.

It is an amenable number.

7285820 is an abundant number, since it is smaller than the sum of its proper divisors (8014444).

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

7285820 is a wasteful number, since it uses less digits than its factorization.

7285820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364300 (or 364298 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 7285820 is about 2699.2258149329. The cubic root of 7285820 is about 193.8620551943.

The spelling of 7285820 in words is "seven million, two hundred eighty-five thousand, eight hundred twenty".