10203220 has 24 divisors (see below), whose sum is σ = 21547008. Its totient is φ = 4058400.

The previous prime is 10203211. The next prime is 10203223. The reversal of 10203220 is 2230201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10203197 and 10203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203223) 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 7 ways as a sum of consecutive naturals, for example, 2485 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (897792).

Almost surely, 2^10203220 is an apocalyptic number.

10203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10203220 is an abundant number, since it is smaller than the sum of its proper divisors (11343788).

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

10203220 is a wasteful number, since it uses less digits than its factorization.

10203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 10203220 is about 3194.2479553097. The cubic root of 10203220 is about 216.8931071152.

Adding to 10203220 its reverse (2230201), we get a palindrome (12433421).

The spelling of 10203220 in words is "ten million, two hundred three thousand, two hundred twenty".