10003240 has 32 divisors (see below), whose sum is σ = 24239880. Its totient is φ = 3693312.

The previous prime is 10003237. The next prime is 10003247. The reversal of 10003240 is 4230001.

It can be written as a sum of positive squares in 4 ways, for example, as 4137156 + 5866084 = 2034^2 + 2422^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003247) 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, 9099 + ... + 10138.

Almost surely, 2^10003240 is an apocalyptic number.

10003240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10003240 is an abundant number, since it is smaller than the sum of its proper divisors (14236640).

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

10003240 is a wasteful number, since it uses less digits than its factorization.

10003240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19261 (or 19257 counting only the distinct ones).

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

The square root of 10003240 is about 3162.7899076606. The cubic root of 10003240 is about 215.4667343854.

Adding to 10003240 its reverse (4230001), we get a palindrome (14233241).

It can be divided in two parts, 1000 and 3240, that multiplied together give a square (3240000 = 1800²).

The spelling of 10003240 in words is "ten million, three thousand, two hundred forty".