10109640 has 32 divisors (see below), whose sum is σ = 30329280. Its totient is φ = 2695872.

The previous prime is 10109623. The next prime is 10109647. The reversal of 10109640 is 4690101.

It is not an unprimeable number, because it can be changed into a prime (10109647) 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, 42004 + ... + 42243.

It is an arithmetic number, because the mean of its divisors is an integer number (947790).

Almost surely, 2^10109640 is an apocalyptic number.

10109640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10109640 is an abundant number, since it is smaller than the sum of its proper divisors (20219640).

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

10109640 is a wasteful number, since it uses less digits than its factorization.

10109640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84261 (or 84257 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 10109640 is about 3179.5660081212. The cubic root of 10109640 is about 216.2279828788.

Adding to 10109640 its reverse (4690101), we get a palindrome (14799741).

The spelling of 10109640 in words is "ten million, one hundred nine thousand, six hundred forty".