10820280 has 64 divisors (see below), whose sum is σ = 33351840. Its totient is φ = 2806272.

The previous prime is 10820267. The next prime is 10820323. The reversal of 10820280 is 8202801.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3222 + ... + 5658.

Almost surely, 2^10820280 is an apocalyptic number.

10820280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10820280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16675920).

10820280 is an abundant number, since it is smaller than the sum of its proper divisors (22531560).

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

10820280 is a wasteful number, since it uses less digits than its factorization.

10820280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 10820280 is about 3289.4194016574. The cubic root of 10820280 is about 221.1801592578.

The spelling of 10820280 in words is "ten million, eight hundred twenty thousand, two hundred eighty".