10243220 has 24 divisors (see below), whose sum is σ = 23166024. Its totient is φ = 3782016.

The previous prime is 10243213. The next prime is 10243229. The reversal of 10243220 is 2234201.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 9647236 = 772^2 + 3106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10243195 and 10243204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10243229) 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, 19439 + ... + 19958.

It is an arithmetic number, because the mean of its divisors is an integer number (965251).

Almost surely, 2^10243220 is an apocalyptic number.

10243220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10243220 is an abundant number, since it is smaller than the sum of its proper divisors (12922804).

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

10243220 is a wasteful number, since it uses less digits than its factorization.

10243220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39419 (or 39417 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 10243220 is about 3200.5030854539. The cubic root of 10243220 is about 217.1761684649.

Adding to 10243220 its reverse (2234201), we get a palindrome (12477421).

The spelling of 10243220 in words is "ten million, two hundred forty-three thousand, two hundred twenty".