10340640 has 144 divisors (see below), whose sum is σ = 36324288. Its totient is φ = 2677248.

The previous prime is 10340609. The next prime is 10340647. The reversal of 10340640 is 4604301.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10340647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61837 + ... + 62003.

It is an arithmetic number, because the mean of its divisors is an integer number (252252).

Almost surely, 2^10340640 is an apocalyptic number.

10340640 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 10340640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18162144).

10340640 is an abundant number, since it is smaller than the sum of its proper divisors (25983648).

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

10340640 is a wasteful number, since it uses less digits than its factorization.

10340640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 10340640 is about 3215.6865518890. The cubic root of 10340640 is about 217.8624949991.

Adding to 10340640 its reverse (4604301), we get a palindrome (14944941).

The spelling of 10340640 in words is "ten million, three hundred forty thousand, six hundred forty".