10418721 has 8 divisors (see below), whose sum is σ = 13920960. Its totient is φ = 6931152.

The previous prime is 10418717. The next prime is 10418731. The reversal of 10418721 is 12781401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10418721 - 2² = 10418717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10418691 and 10418700.

It is not an unprimeable number, because it can be changed into a prime (10418731) 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 7 ways as a sum of consecutive naturals, for example, 1885 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (1740120).

Almost surely, 2^10418721 is an apocalyptic number.

It is an amenable number.

10418721 is a deficient number, since it is larger than the sum of its proper divisors (3502239).

10418721 is an equidigital number, since it uses as much as digits as its factorization.

10418721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 10418721 is about 3227.8043621013. The cubic root of 10418721 is about 218.4094722441.

The spelling of 10418721 in words is "ten million, four hundred eighteen thousand, seven hundred twenty-one".