10320820 has 24 divisors (see below), whose sum is σ = 21738528. Its totient is φ = 4116000.

The previous prime is 10320803. The next prime is 10320829. The reversal of 10320820 is 2802301.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10320794 and 10320803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9295 + ... + 10345.

It is an arithmetic number, because the mean of its divisors is an integer number (905772).

Almost surely, 2^10320820 is an apocalyptic number.

10320820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10320820 is an abundant number, since it is smaller than the sum of its proper divisors (11417708).

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

10320820 is a wasteful number, since it uses less digits than its factorization.

10320820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 10320820 is about 3212.6033057320. The cubic root of 10320820 is about 217.7232129560.

The spelling of 10320820 in words is "ten million, three hundred twenty thousand, eight hundred twenty".