10203640 has 32 divisors (see below), whose sum is σ = 23256000. Its totient is φ = 4028544.

The previous prime is 10203617. The next prime is 10203643. The reversal of 10203640 is 4630201.

It is a super-2 number, since 2×10203640² = 208228538499200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203643) 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, 1546 + ... + 4774.

It is an arithmetic number, because the mean of its divisors is an integer number (726750).

Almost surely, 2^10203640 is an apocalyptic number.

10203640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10203640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11628000).

10203640 is an abundant number, since it is smaller than the sum of its proper divisors (13052360).

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

10203640 is a wasteful number, since it uses less digits than its factorization.

10203640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 10203640 is about 3194.3136978074. The cubic root of 10203640 is about 216.8960830991.

Adding to 10203640 its reverse (4630201), we get a palindrome (14833841).

The spelling of 10203640 in words is "ten million, two hundred three thousand, six hundred forty".