10644240 has 40 divisors (see below), whose sum is σ = 32997888. Its totient is φ = 2838400.

The previous prime is 10644233. The next prime is 10644269. The reversal of 10644240 is 4244601.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10644240² = 226599690355200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21936 + ... + 22415.

Almost surely, 2^10644240 is an apocalyptic number.

10644240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10644240 is an abundant number, since it is smaller than the sum of its proper divisors (22353648).

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

10644240 is a wasteful number, since it uses less digits than its factorization.

10644240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44367 (or 44361 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 10644240 is about 3262.5511490243. The cubic root of 10644240 is about 219.9741016346.

Adding to 10644240 its reverse (4244601), we get a palindrome (14888841).

The spelling of 10644240 in words is "ten million, six hundred forty-four thousand, two hundred forty".