10918721 has 16 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 9379920.

The previous prime is 10918693. The next prime is 10918723. The reversal of 10918721 is 12781901.

It is not a de Polignac number, because 10918721 - 2⁶ = 10918657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10918723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25850 + ... + 26268.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^10918721 is an apocalyptic number.

10918721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10918721 is a deficient number, since it is larger than the sum of its proper divisors (1661119).

10918721 is a wasteful number, since it uses less digits than its factorization.

10918721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 10918721 is about 3304.3488012012. The cubic root of 10918721 is about 221.8488880466.

The spelling of 10918721 in words is "ten million, nine hundred eighteen thousand, seven hundred twenty-one".