10309220 has 24 divisors (see below), whose sum is σ = 21852600. Its totient is φ = 4084992.

The previous prime is 10309193. The next prime is 10309237. The reversal of 10309220 is 2290301.

10309220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 107584 + 10201636 = 328^2 + 3194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (910525).

Almost surely, 2^10309220 is an apocalyptic number.

10309220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10309220 is an abundant number, since it is smaller than the sum of its proper divisors (11543380).

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

10309220 is a wasteful number, since it uses less digits than its factorization.

10309220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847 (or 4845 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 10309220 is about 3210.7974087444. The cubic root of 10309220 is about 217.6416129776.

Adding to 10309220 its reverse (2290301), we get a palindrome (12599521).

The spelling of 10309220 in words is "ten million, three hundred nine thousand, two hundred twenty".