10503220 has 96 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 3193344.

The previous prime is 10503217. The next prime is 10503221. The reversal of 10503220 is 2230501.

It is a super-2 number, since 2×10503220² = 220635260736800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 10503220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10503221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52681 + ... + 52879.

It is an arithmetic number, because the mean of its divisors is an integer number (294000).

Almost surely, 2^10503220 is an apocalyptic number.

10503220 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 10503220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14112000).

10503220 is an abundant number, since it is smaller than the sum of its proper divisors (17720780).

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

10503220 is a wasteful number, since it uses less digits than its factorization.

10503220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 10503220 is about 3240.8671679043. The cubic root of 10503220 is about 218.9983389156.

Adding to 10503220 its reverse (2230501), we get a palindrome (12733721).

The spelling of 10503220 in words is "ten million, five hundred three thousand, two hundred twenty".