10243720 has 16 divisors (see below), whose sum is σ = 23048460. Its totient is φ = 4097472.

The previous prime is 10243703. The next prime is 10243729. The reversal of 10243720 is 2734201.

It can be written as a sum of positive squares in 2 ways, for example, as 8538084 + 1705636 = 2922^2 + 1306^2 .

It is not an unprimeable number, because it can be changed into a prime (10243729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128007 + ... + 128086.

Almost surely, 2^10243720 is an apocalyptic number.

10243720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10243720 is an abundant number, since it is smaller than the sum of its proper divisors (12804740).

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

10243720 is a wasteful number, since it uses less digits than its factorization.

10243720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256104 (or 256100 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 10243720 is about 3200.5811972203. The cubic root of 10243720 is about 217.1797020646.

Adding to 10243720 its reverse (2734201), we get a palindrome (12977921).

The spelling of 10243720 in words is "ten million, two hundred forty-three thousand, seven hundred twenty".