7803220 has 12 divisors (see below), whose sum is σ = 16386804. Its totient is φ = 3121280.

The previous prime is 7803217. The next prime is 7803223. The reversal of 7803220 is 223087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7803217) and next prime (7803223).

It can be written as a sum of positive squares in 2 ways, for example, as 3283344 + 4519876 = 1812^2 + 2126^2 .

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 7803191 and 7803200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7803223) 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 3 ways as a sum of consecutive naturals, for example, 195061 + ... + 195100.

It is an arithmetic number, because the mean of its divisors is an integer number (1365567).

Almost surely, 2^7803220 is an apocalyptic number.

It is an amenable number.

7803220 is an abundant number, since it is smaller than the sum of its proper divisors (8583584).

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

7803220 is a wasteful number, since it uses less digits than its factorization.

7803220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390170 (or 390168 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7803220 is about 2793.4244217448. The cubic root of 7803220 is about 198.3465345982.

The spelling of 7803220 in words is "seven million, eight hundred three thousand, two hundred twenty".