10809072 has 80 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 3556800.

The previous prime is 10809061. The next prime is 10809077. The reversal of 10809072 is 27090801.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10809077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56497 + ... + 56687.

It is an arithmetic number, because the mean of its divisors is an integer number (392832).

Almost surely, 2^10809072 is an apocalyptic number.

10809072 is a gapful number since it is divisible by the number (12) 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 10809072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15713280).

10809072 is an abundant number, since it is smaller than the sum of its proper divisors (20617488).

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

10809072 is a wasteful number, since it uses less digits than its factorization.

10809072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 10809072 is about 3287.7153161428. The cubic root of 10809072 is about 221.1037643260.

Adding to 10809072 its reverse (27090801), we get a palindrome (37899873).

The spelling of 10809072 in words is "ten million, eight hundred nine thousand, seventy-two".